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Many car owners like to listen to music while driving to make driving more fun. However, listening to music is also a little troublesome. There is more uncertainty in listening to the radio on the radio. Maybe there is not a song that you like to listen to in an hour of broadcasting. When listening to music on a CD player, you have to jump over when you encounter a song you don’t like. A large stack of CD boxes in the compartment in the car also takes up space. Thus, the motorcycle sound response came into being.

Specifically, it is divided into two categories: one is MP3 players with built-in transmitter modules. This type of MP3 players have integrated FM transmitters inside. As long as there is one such MP3, it can achieve vehicle functions. The other is a separate FM transmitter module, which is just a separate FM transmitter. Strictly speaking, it is not specially prepared for MP3. Other products such as PDA, CD, MD, etc. can also be used.
Motorcycle audio is divided into two series: built-in and external. The distinction between the two series is mainly based on the combination of vehicle radio frequency devices and MP3 players. The integrated design of the vehicle-mounted radio frequency device built into the MP3 player is called the built-in motorcycle MP3; the ordinary MP3 is bundled with an FM transmitter, which is called the external motorcycle MP3.
In addition to being portable and compact, the built-in motorcycle MP3 has many transmission frequency bands. This is the most obvious benefit of the built-in motorcycle MP3, which means that the motorcycle MP3 transmission frequency band is not easy to conflict with local FM radio stations. When a band is already occupied, the owner can choose another band to play favorite MP3 music. Some newly designed all-in-one electric vehicle MP3 products can even support any frequency band transmission, further breaking the limitation of FM transmission frequency. The disadvantage of the built-in MP3 is that once it is selected, it cannot be easily replaced because the appearance is not popular enough. This is easier to achieve with the external MP3. For the bundled collocation in which the radio frequency device and the player are separated, when the car owner does not like the appearance of the player, the player can be replaced separately without wasting more money. However, there are generally only a few fixed frequency bands for external MP3 transmission, and many of the transmitters are not specially prepared for MP3 playback.

Motorcycle helmet (standard named motorcycle occupant helmet) is a head protection device for motorcycle drivers and passengers. The main purpose of the helmet is to protect the knight’s head when impacted, prevent or reduce damage and even save the knight’s life.

Some helmets provide additional convenient devices: such as vent devices, face shields, ear protection devices, intercom devices, etc. Generally can be divided into two kinds of winter helmets and summer helmets.

Motorcycle helmet with built-in lens

Features:
-ABS plastic material, strong and durable
-Built-in black and transparent lens
-Retro style design
-Lightweight and portable
-DOT certification to ensure safety
-Comfortable and thick lining, safe and warm product

There are many friends who love to ride, but they don’t have enough riding time for work. After eating at night, go out to digest. Without the bicycle light, it is easy to collide with the car due to poor vision. Bicycle light battery life Long-range, long-range, strong shock resistance, this is one of the must-have equipment for many cyclists. Which brand of bicycle light is better?

USB Rechargeable Flashlight For Bicycle Rear Light Waterproof Bike Helmet Taillight Cycling Warning Light Flash Cyling Back Lamp

SPECIFICATIONS:
Max Brightness: 20Lm
Charging Time: 2 hours
Capacity: Polymer Li-ion battery 220mAh
IPX5 waterproof
Working Time:
Strobe: 9 hours
Slow Strobe: 56 hours
Meteor Flash: 14 hours
Ta Chi Flash: 17 hours
Breathing Flash: 8 hours
Easy to install, suitable for many sizes seatposts
3 types to choose: 3 modes / 5 modes

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As early as the 1930s, bicycles became a fashionable means of transportation in some big cities in the UK. However, the bicycles that go through the streets and lanes have caused trouble to the cars that drive at night, and traffic accidents have occurred frequently. The British government therefore required bicycle manufacturers to install lights and reflectors on the front and rear of the bicycle. Among them, the design of the reflector makes the manufacturer's brains awkward, because ordinary flat mirrors often cannot reflect the car lights "the original way". Through repeated research on the principle of light reflection, people finally produced an ideal light reflection device. Its surface is a piece of flat glass, and there are many prismatic cones inside. Each cone is composed of three cones perpendicular to each other at right angles, forming three light reflecting surfaces, this is the corner reflector. Since the three reflecting surfaces of the corner reflector are perpendicular to each other, no matter what angle the light is coming from through the glass on the surface, the reflected light can always return in the original direction "magically", which makes the driver of the car driving behind the bicycle , The reflected light can be seen at any angle. Moreover, red or orange glass is selected for the corner reflector to make the reflected light a red or yellow light with strong "penetrating power", which can attract more visual attention. In addition, the corner reflector made of beautiful red glass is still a good decoration!

USB Rechargeable Bicycle Rear Light Cycling LED Taillight MTB Road Bike Tail Light Back Lamp for Bicycle

Specifications£º

1. Lamp type: COB
2. Battery: 400MA lithium battery
3. Lumens: 100 lumens
4. Charging time: 2 hours
5. Working hours: 3~8 hours
6. Light color: red light / white light
7. Product color: red black / white black
8. Product size: 6.32.72.8CM
9. Voltage: 3.7V
   How to use:
   Click the switch, double-click between the constant light mode and the flashing mode, and click between each function mode to change between the gears, which are: energy saving - medium bright - highlight - flashing - flashing - flashing cycle. Long press to shut down, with memory function, restart the gear position for the previous shutdown gear
   Note: The white rear light refers to the white appearance, not the white light.

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When we need to ride at night, or need to ride in some haze weather, then we must equip our bicycle with a good lighting tool. The so-called good lighting tools can not only play a role in lighting exploration for users, but also should not hinder the actions of others. Excellent lighting tools are not only superior in quality, but at the same time, in terms of matching with the bicycle type, there is also a relatively large flexibility in the adjustment of the light. Ordinary lighting tools can’t be compared. Then, bicycles How should hobbyists choose the right lighting tool?

USB Rechargeable Bicycle Rear Light Cycling LED Taillight MTB Road Bike Tail Light Back Lamp for Bicycle

Specifications£º

1. Lamp type: COB
2. Battery: 400MA lithium battery
3. Lumens: 100 lumens
4. Charging time: 2 hours
5. Working hours: 3~8 hours
6. Light color: red light / white light
7. Product color: red black / white black
8. Product size: 6.32.72.8CM
9. Voltage: 3.7V
   How to use:
   Click the switch, double-click between the constant light mode and the flashing mode, and click between each function mode to change between the gears, which are: energy saving - medium bright - highlight - flashing - flashing - flashing cycle. Long press to shut down, with memory function, restart the gear position for the previous shutdown gear
   Note: The white rear light refers to the white appearance, not the white light.

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Bicycle lights are lights installed on bicycles for riders to ride at night. Riders often use a combination of flashlights and holding clips to serve as night riding equipment. The biggest advantage is that it is economical and portable. The disadvantages are narrow flooding, large blind spots, short battery life, and poor safety.

There are more and more friends who like to ride. Due to work, the choice of riding time is usually only night and weekend. On holidays, night riding has become a very popular choice. Due to the particularity of night riding, car lights have become a necessity, so how do you choose the lights of your car?

Bicycle Rear Light For Bike Automatic Brake Induction Taillight MTB Cycling Charge LED Safety Running Lamp Accessories

Features:

• Automatic Brake Induction
• 36 LED Chip & COB
• 180¡ãWide Angle
• Long - time Endurance
• IPX-5 Water-proof
  Specifications£º
  Charging Time: 2 Hours
  Battery: Li-polymer 600mAh
  Lighting Mode: High Lighting / Low Lighting / Fast Flash Lighting / Breathable Lighting
  Water-proof: IPX-5
  Size: 41x30x26mm
  Housing material: Aluminum alloy + Factory plastic
  Package:
  1*Bicycle light

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From the outside, printer is mainly composed of a shell, a control panel, an interface, a paper tray, a paper jam guide, a paper feeder, and a paper output extension board;

Extended information

Classification and characteristics of printers based on component structure

1. Classification: According to the data transmission mode, it can be divided into serial printers and parallel printers; but according to the working principle of printers, printers can be divided into two categories: impact type and non-impact type.
2. Features:

①The highest printing speed: 52.5 fonts/second.

②With international font library.

③There are parallel and series terminals.

④ Thermal serial dot printer.

⑤ Make a hard copy of the measurement results.

Printer precautions

In case the printer generates heat, smoke, peculiar smell, abnormal sound, etc., please cut off the power immediately and contact the information personnel.

No other items are allowed on the printer. When the printer is not used for a long time, please unplug the power plug from the power socket.

Just in case, when there is a thunder nearby, pull out the power plug from the socket. If it is plugged in, the machine may be damaged.

Some projectors have a USB port. You are more likely to find one on a document projector than a home theater model, although it is rare in both cases. However, if you are lucky enough to have this option, it is by far the easiest way to connect a phone to a projector. Just connect the cables to both devices, make sure the projector is set to the correct input channel, and then turn them on.

Let me talk about the wired connection first: there are two ways: one is if the smart phone supports MHL connection, then directly buy an MHL cable, connect one end to the phone, and the other end to the HDMI interface of the projector, and then select the projector The signal source is high-definition signal (HDMI interface input), which can realize the same screen of the mobile phone to the projector.

The windows tablet (not the baiRT version) is still very good, essentially a tablet that can be called a computer.

1. The software has wide applicability;
2. Compared with traditional Bai desktops and notebooks, it is easy to carry;
3. The hardware functions are more front and rear cameras, 3G, GPS, etc. than traditional computers (depending on the brand and model);
4. Compared with traditional computers, the performance is generally not as good as traditional computers due to high integration, heat dissipation considerations, battery life and other factors;
5. However, the most important thing to choose is to look at your needs and positioning, otherwise more often good things will be reduced to products with poor user experience, low use efficiency, and poor evaluation.

The Windows system tablet computer will fully play mobile office and leisure, especially the Windows 10 system, which can operate the Windows tablet like iPad and Android tablets. Although the number of Windows system applications is relatively small, there are commonly used applications.

More tablets have everything！

The 3D glasses adopt the most advanced "time division method", which is realized by the signal synchronized between the 3D glasses and the display. When the display outputs a left-eye image, the left eye lens is in a light-transmitting state, and the right eye is in a opaque state, and when the display outputs a right-eye image, the right eye lens transmits light and the left eye does not transmit light, so two glasses I saw different game screens to achieve the purpose of deceiving the eyes.
With such frequent switching, the two eyes can obtain nuanced images respectively, and the brain calculates to generate a 3D stereoscopic image. 3D glasses are designed with sophisticated optical components. Compared with passive glasses, they can achieve double resolution and a wide viewing angle for each eye.

principle:The main reason for the stereoscopic effect is that the left and right eyes see different pictures, and the positions of the left and right eyes are different, so there will be some differences in the pictures. When shooting stereo images, two lenses are used, one on the left and the other on the right. Then the image of the left lens is filtered by a horizontal polarizer to obtain horizontally polarized light, and the image of the right lens is filtered by a vertical polarizer to obtain longitudinally polarized light. The left eye and the right eye of the stereo glasses are respectively equipped with a horizontal polarizer and a vertical polarizer. The horizontally polarized light can only pass through the horizontal polarizer, and the longitudinally polarized light can only pass through the vertical polarizer. This ensures that things captured by the camera on the left can only enter the left eye, and things captured by the camera on the right can only enter the right eye, so it is almost stereoscopic.

We have various styles of 3d glasses