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There are some ways to evaluate speakers for earphones, but the sense of hearing of earphones is different from that of speakers. The sound waves emitted by speakers are attenuated and interfered in the air, interacting with human heads and ears, and the sound of earphones directly enters the ears. .
The sound quality of a headset is more important than its technical performance. Because the shape of the head and ears are different, a pair of headsets will have different hearing feelings for different people, so the recommendation can only be used as a reference. If you have the opportunity, you must listen in person Only then can you really feel the sound of the headset.

The comfort of the earphone is also very important. If there are other activities when using the earphone, you should also consider it. A pair of earphones should not be too tight or too loose, and should be worn for a long time. The adjustability of the headband and the unit can ensure the use of different head shapes and different purposes. The unit needs to be able to rotate. In addition, the length of the line and the way of entering the line are also a factor that affects the use. When adjusting the length of the headband, pay attention: the headband is short, the pressure on the top of the head is high, and the pressure on the head of the earmuffs is small. The opposite is the case when the headband is long. The three-point pressure is the most comfortable. For the adaptive head This problem does not exist anymore. There are also some over-ear headphones with a pentagonal design, which can fit the human ear more and is more comfortable to wear.

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Skullcandy INKD 2.0 Wireless Neck Hanging Bluetooth Headset

Main Features
• Bluetooth version V4.1
• Transmission distance 10 meters
• Life time 8 hours
• Headphone material: ABS+ silicone earplugs
• Impedance: 16Ω
• Sensitivity: 93dB/mW
• Headphone sound principle: moving coil
• With or without microphone: with wheat
• Multifunctional waterproof MIC
• Drive unit diameter 9mm
• Sound pressure level: 95-101dB
• Battery capacity 150mAh
Usage mode: Earphone
Bluetooth Version: 4.1
Transmission range: 10 meters
Bluetooth protocol: A2DP, AVRCP, HFP, HSP
Battery Capacity (mAh): 150mAh
Package weight: 0.122 kg
Package size (L x W x H): 18.50 x 8.30 x 2.40 cm / 7.28 x 3.27 x 0.94 inches
Package Contents: 1 x Headset, 1 x Pair of Silicone Earplugs (medium and small), 1 x USB Charging Cable, 1 x English Manual

In order to avoid unintentionally damaging the digital camera products you own, the digital camera bag has also become one of the must-buy camera accessories.
From the purpose of the digital camera bag, it can be divided into professional bag and ordinary bag. When buying a professional digital camera, a bag is usually included with it. This is usually the original factory bag, which is usually only suitable for a specific brand and specific model of digital camera. However, this kind of bundled bag generally can only hold one camera, and there is no place to put more accessories such as adapter lenses, so many professionals still need to buy more professional bags. Some of these bags can be used. Compatible with multiple models of digital cameras. If you are just an ordinary digital camera user and the products you are buying are only portable household products, then you don't need to spend hundreds of thousands to buy professional camera bags. It is enough to buy a well-made ordinary household camera bag. The structure of this kind of camera bag is relatively simple, you can put down the camera, battery, memory card, etc., and the price is relatively cheap.

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CADEN L5 Stylish Nylon Multifunction Shockproof Camera Backpack Bag for Canon Nikon

Main Features:
-With compact design and soft material, an excellent backpack to keep your camera
-Tough exterior and durable foam and padded anti-shock lining, shockproof, water resistant and dustproof
-Adjustable compartments and dividers combinations meet all your needs
-Additional pockets for 13-inch laptop, pad, smartphone, and tripod can also be included, large enough space and multifunction
-Comfortable padded shoulder straps relieve the stress and convenient to take out the camera
-Backpack your happy journey from here
-Fit for Canon 50D, 60D, 100D, 550D, 600D, 1000D, etc. and for Nikon D60, D90, D3100, D3200, D5200, D7000, etc.

Specifications:
Folded size (L x W x H ): 30cm x 23cm x 15cm

Note:
The cameras, pad, smartphone, tripod, laptop and other accessories showed in the pictures are not included.
Material: Nylon
Type: Soft Bag
Package weight: 1.352 kg
Product Size(L x W x H): 39.00 x 30.00 x 14.00 cm / 15.35 x 11.81 x 5.51 inches
Package Size(L x W x H): 30.50 x 23.50 x 15.50 cm / 12.01 x 9.25 x 6.1 inches
Package Contents: 1 x CADEN L5 Camera Backpack Bag

Headphones are a symbol of human portable audio. There are two standards for mobile headsets: OMTP standard is usually called national standard, and CTIA is called international standard. Headphones are classified according to their energy conversion methods, mainly including: moving coil method, moving iron method, electrostatic type and other magnetic type. From the structural and functional methods, it can be divided into semi-open and closed; from the wearing form, there are earplugs, hanging ears, in-ear and headwear; from the number of wearers, there are single earphones and Multi-person earphones; distinguished from the sound source, it can be divided into active earphones and passive earphones; active earphones are also often called card earphones.

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i13 TWS Bluetooth 5.0 / Noise Cancelling / Comfortable Wearing / Automatic Pairing Wireless Earphone

Descriptions:
With a lightweight and compact body, wireless design, Bluetooth V5.0 technology, this earphone has superior HiFi sound quality. Equipped with a small size charging case, it is convenient to charge and easy to carry.

Main Features:
• Bluetooth V5.0 and chip QCC3003 technology protect wireless headphones from cable disasters
• Noise cancelling to filter out background noise for clear voice and enjoyable communication
• Designed according to the shape of ears, you can enjoy comfortable wear
• Automatic pairing, automatic switching, integrated with charging and storage
• Surround sound effect, clear and high quality
• 320mAh charging bin, 40mAh built-in Li-ion battery earphone

Specifications:
Driver: 15mm
Impedance: 32ohm
Bluetooth version: Bluetooth 5.0
Bluetooth use frequency band: 2.4GHz
Bluetooth distance: 10-15 meters barrier-free
Power level: class 2
Output power: 30mW
Frequency response: 20-20000Hz
Working voltage range: 3.0V-4.2V
Microphone sensitivity: -42dB
Powerful noise cancellation circuit

NOTE
Adjust volume function is not available for Android phones
Type: In-Ear
Material: ABS
Main Functions: Bluetooth
Application: Sport,Working
Cable Length (m): 0m
Compatible with: Computer,iPhone,Mobile phone
Connectivity: Wireless
Driver unit: 15mm
Frequency response: 20-20000Hz
Impedance: 32ohms
Bluetooth: Yes
Bluetooth Version: V5.0
WIFI: No
Battery Type: Built-in
Package weight: 0.134 kg
Product size (L x W x H): 5.00 x 4.00 x 2.30 cm / 1.97 x 1.57 x 0.91 inches
Package size (L x W x H): 10.00 x 10.00 x 3.30 cm / 3.94 x 3.94 x 1.3 inches
Package Contents: 2 x Headset, 1 x Charging Box, 1 x Chinese / English Manual, 1 x Charging Cable

A tripod is a support frame used to stabilize the camera to achieve certain photographic effects. The positioning of the tripod is very important. Tripods can be divided into wood, high-strength plastic materials, aluminum alloy materials, steel materials, volcanic stone, carbon fiber, etc. according to the material classification.

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QZSD Q160S Portable Aluminum Alloy Camera Tripod with 360 Degree Head

Main Features:
● Flexible to adjust angle and height: you can get your desired height with the 4 section leg of the tripod stand and adjust the angle freely by adjusting the angle 3 steps adjustment lock
● 2 in 1 head with 360 degree: panhead and ball head compact
● Flip leg lock is easy to operate
● Lightweight and portable, good for travel
● Anti-corrosion and wear resistance keep the surface bright and intact
Brand: QZSD
Model: Q160S
Material: Aluminium Alloy
Production type: Tripod
Compatible with: Digital Camera,DSLR,Mobile phone
Tripod Head Type: Three Way Head
Leg Sections: 4
Max Height (cm): 126
Minimum Height (cm): 105
Max Load (kg): 1-3kg
Folded Length (cm): 40
Package weight: 1.176 kg
Package size (L x W x H): 42.00 x 9.50 x 8.50 cm / 16.54 x 3.74 x 3.35 inches
Package Contents: 1 x Tripod, 1 x Tripod Bag, 1 x Chinese / English User Manual, 1 x Wrench, 1 x Hand Grip

For people who love to ride a motorcycle, a good pair of motorcycle glasses is an indispensable equipment. When you are riding too fast, your eyes will be blown uncomfortably by the wind, or there will be other air impurities. Invade the eyes, if you have a good motorcycle glasses at this time, you can effectively protect your eyes from harm.

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Motorcycle Helmet Bicycle Goggles Outdoor Cycling Equipment Harley Goggles Mask

The utility model relates to an eye mask suitable for outdoor riding of motorcycles and bicycles, which can be disassembled and can be used for both purposes.
TUP mirror frame, high quality materials, fine technology, strong impact;
Professional 6 curved cylinder integrated forming PC lens, UV400 high clear transmittance, 100% uv resistance;
Internal breathable cotton design, sweat absorption and breathable, soft and comfortable;
High elastic elastic belt that can be adjusted freely, suitable for wearing different head types;
Take the slot design after the myopia of card seat, the friend of eye myopia also can use easily.
Features: Night Vision,Anti-UV,UV400,Removable Legs,with Myopic Frame
Suitable for: Cycling,Camping,Mountaineering,Traveling
Gender: Unisex
Type: Goggle
Lens material: PC
Frame Materials: PC
Lens Color: Silver,Transparent,Colorful,Transparent Yellow
Frame Color: Black
Package weight: 0.194 kg
Product Size(L x W x H): 18.80 x 20.00 x 10.20 cm / 7.4 x 7.87 x 4.02 inches
Package Size(L x W x H): 20.00 x 20.00 x 6.00 cm / 7.87 x 7.87 x 2.36 inches
Package Contents: 1 x Goggles

The selfie stick is a self-portrait artifact that has taken the world by storm. It can be stretched between 20cm and 120cm in length. Users only need to fix a mobile phone or a point-and-shoot camera on the telescopic stick, and take a multi-angle selfie through the remote control.

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APEXEL APL-D3 Selfie Stick

Description:
This is a multifunctional selfie stick which brings happiness into your life. You can use it to take self-photography or group photos. Perfect for parties, traveling, graduation, gathering and so on.

Features:
-2 in 1 selfie stick: allow you to take a self-photograph or group photos easily and bring more joy into your life
-With a phone holder: it is very flexible to fit the size of your smartphone
-With a foldable tripod: adjust the height in order to provide a stable shooting platform for you
-With a 360 degree rotation design to get the perfect angle
-With a Bluetooth remote control: allow taking the shot from a distance
-Made of high-quality aluminum alloy, ABS and PC materials
-Perfect for parties, traveling, graduation, etc.

Parameters:
The length of the phone holder: 2.3-3.5 inch
The length of the tripod: 7.9-26.7 inch
The distance of the Bluetooth remote control: 10m
Cable length: 7.87 inch
Capacity: 65mAh
Package weight: 0.213 kg
Package Size(L x W x H): 20.00 x 6.00 x 5.00 cm / 7.87 x 2.36 x 1.97 inches
Package Contents: 1 x Selfie Stick, 1 x Holder, 1 x Bluetooth Remote, 1 x Cable

It is a portable charger that can be carried by individuals and can store electrical energy. It is mainly used for charging consumer electronic products such as handheld mobile devices. It is especially used in situations where there is no external power supply. Its main components include: a battery used as electric energy storage, a circuit to stabilize the output voltage (DC-DC converter), and most of the mobile power supplies have a charger to charge the built-in battery.
The emergence of mobile power was originally used to charge consumer electronic products where there is no external power supply, but because its output interface is a highly versatile USB interface, it can also be used as other devices or devices that use USB interface as power input. Equipment power supply.

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VINSIC VSPB202 20000mAh Power Bank Dual USB Interface Smart Charger

● 20000mAh ridiculous big power, offer enough energy to your digital devices.
● Intelligent output, provide matched currents to different devices.
● Elegant aluminum alloy surface, comfortable touch feeling.
● Ultra-thin and portable.
● The battery has passed the MSDS (Material Safety Data Sheet ).
● Battery type: Li-polymer
● Input: 5V 2A
● Output: 5V 2.4A
Battery Capacity(mAh): 15001-20000
Package weight: 0.954 kg
Product Size(L x W x H): 16.30 x 11.80 x 1.40 cm / 6.42 x 4.65 x 0.55 inches
Package Size(L x W x H): 21.00 x 14.50 x 2.80 cm / 8.27 x 5.71 x 1.1 inches
Package Contents: 1 x Vinsic 20000mAh Power Bank, 1 x USB Charging Cable, 1 X User Manual

USB data cables are now more and more widely used, convenient to carry, fast and stable data transmission.

USB data cables are widely used, which can facilitate fast and stable data transfer and support all types of computers; the disadvantage is that the price of ICs is slightly higher, and some data cables do not support the flashing function.

USB is the most widely used external bus standard in the PC field. It is used to regulate the connection and communication between computers and external devices. The USB interface supports plug-and-play and hot-plug functions of the device. With the rapid development of computer hardware, the application of USB has increased the speed of data transmission between external devices. The greatest benefit of the increase in speed for users is that users can use more efficient external devices.

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MHL To HDMI HDTV Adapter Converter Mobile Phone Digital Cable

Cixin tieline will support MHL phone USB interface is converted into a standard HDMI output, so that we can in high-definition TV broadcast content on the phone-can play games, watch movie video, etc
There is a separate USB port on the transfer line, which can connect the charger or cable to charge the mobile phone that is being used and power the adapter.
Accessories type: Cable
Type: Cable,Adapter
Material (Cable&Adapter): Others, Metal
Interface Type: HDMI, Micro USB
Cable Length (cm): 200cm
Package weight: 0.043 kg
Package size (L x W x H): 12.00 x 12.00 x 4.00 cm / 4.72 x 4.72 x 1.57 inches
Package Contents: 1 x Cable

Motorcycle gloves are a kind of sports gloves. As the name suggests, they are mainly used for driving motorcycle gloves, especially those used by motorcycle racers. Motorcycle gloves are exquisite in materials, complex in style, and highly functional in resistance to friction and impact. Motorcycle gloves are generally made of genuine leather or high imitation leather, with high-quality foam materials that resist friction and impact at the joints, and carbon fiber protective parts on the back of the hand if necessary.

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PRO-BIKER Motorcycle Racing Waterproof Winter Warm Skiing Snowboarding Gloves

Key Features This is due to their light construction, long life in light riding.
Cotton filler keeps hands warm, Windproof, Waterproof
Extended cuff protects the wrists
Elastic and Hook & Loop closing strap for a snug fit
Function: Breathable, Wearable, Anti-skidding, Protective
Activity: motorcycle racing off-road cycling, Bicycle, skiing, skating, fishing, climbing and other outdoor sports.
Accessories type: Motorcycle Gloves
Gender: Universal
Function: Waterproof,Wearable,Windproof
Package weight: 0.298 kg
Product size (L x W x H): 29.00 x 8.00 x 4.00 cm / 11.42 x 3.15 x 1.57 inches
Package size (L x W x H): 30.00 x 14.00 x 8.00 cm / 11.81 x 5.51 x 3.15 inches
Package Contents: 1 x Pair Motorcycle gloves

A router is a device connected to various local area networks and wide area networks in the Internet. It will automatically select and set routes according to the channel conditions, and send signals in the best path and in order. Routers have been widely used in all walks of life, and various products of different grades have become the main force in realizing various backbone network internal connections, backbone network interconnections, and backbone network and Internet interconnection services.

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Xiaomi Mesh 2.4 + 5GHz WiFi Smart Router AC1300 + 1000M LAN + 1300M Power Line Qualcomm DAKOTA 4 Core 4 Signal Amplifiers

Xiaomi Mesh 2.4GHz + 5GHz WiFi Intelligent Router
Stable coverage, ubiquitous, AC1300 wireless + 1000M LAN + 1300M power line multichannel high-speed hybrid transmission. Qualcomm DAKOTA 4-core CPU, 4 independent signal amplifiers, full-size WiFi seamless coverage, optimized for Xiaomi smart home optimization.

Main Features
● This is a Wi-Fi system that can handle a variety of home environments
● Good signal, no dead ends, achieve good signals everywhere
● Dual-band, one Wi-Fi name, no longer entangled to choose
● Use wire networking, regardless of wall blocking
● Four independent signal amplifiers with good signal and wall penetration
● Compared with the wireless relay mode, the network speed attenuation is greatly reduced
● Strong CPU, Internet speed is fast
● "Chimney" cooling structure, large metal heat sink
● A set of routers tailored for Xiaomi smart home equipment
● Support IPv6
● MU-MIMO takes care of every Internet-connected device
● Easily manage your child's online time and content
● Smart APP, feature-rich, remote control: Xiaomi WiFi APP
● Simple configuration, blind insertion of network port
Brand: Xiaomi
Model: Mesh
Type: Router
Interface: DC Port,LAN,WAN
Router Connectivity Type: Ethernet,Wireless
Transmission Rate: 2600Mbps
Speed of Ethernet Port: 1000Mbps
Network Protocols: 802.11k,802.11v,IEEE 802.11a,IEEE 802.11ac,IEEE 802.11b,IEEE 802.11g,IEEE 802.11n,IEEE 802.3,IEEE 802.3U,IPv6
Wireless Standard: Wireless AC
Wireless Security: 64/128 Bit WEP,WEP,WPA-PSK,WPA2,WPA2-PSK,WPS
WiFi Network Frequency: 2.4GHz,5GHz
Supports System: Android,IOS
LAN Ports: 3 ports
Max. LAN Data Rate: 1200Mbps above
Network Communication: WiFi
Features: Dual Band
Usage: Home use
DC Port: 5.5 x 2.5
Language: Chinese
Package weight: 2.449 kg
Product size (L x W x H): 18.20 x 12.00 x 8.00 cm / 7.17 x 4.72 x 3.15 inches
Package size (L x W x H): 20.00 x 18.00 x 14.00 cm / 7.87 x 7.09 x 5.51 inches
Packing List: 2 x Router, 1 x Chinese Manual ( Include After Sale Card ), 1 x Power Adapter, 1 x Cable