Features: 1. Fully sealed and rain-proof and dust-proof design, which can cope with various complex environments during riding. 2. Built-in 700 mAh large-capacity lithium metal battery, smooth and worry-free. 3. Through radio frequency technology, data is transmitted in real time, and tire pressure is always accurately monitored. 4. The high-precision LCD screen with time display makes observation very convenient. 5. Once the tire pressure is abnormal, the tire pressure meter will send out a high-volume alarm sound warning to remind you to deal with the abnormality in time. 6. Long receiving distance and stable signal. 7. The structure is compact, the body is small, and the appearance is beautiful. It is a good gift for personal use and to other motorcyclists. Specification: Product name: M5 motorcycle tire pressure sensor Product color: black Product material: ABS Product size: 5*5*2.8cm Product power supply: built-in 700mAh rechargeable lithium battery Charging method: magnetic charging Sensor parameters: Working temperature: -20~+80 Storage temperature: -30~+85 Pressure range: 0~6.6bar Pressure accuracy: +- 0.1bar Temperature accuracy: +- 3 Transmitting power: 10dB Frequency: 433.92MHz20.00MHz Waterproof rating: IP65 waterproof Packing list: tire pressure gauge*1, USB cable*1, bracket*1, external sensor*2, wrench*1, gasket*2, manual*1 Package weight: about 200g Bracket installation instructions: 1. Unscrew the 2 screws, put on the motorcycleelectric bicyclebicycle and tighten; 2. Align the mounting head of the bracket to the desired position and confirm that the bracket is firm. 3. Install the tire pressure receiver on the bracket, tighten and then lock; use the ball head to rotate the adjustment knob to move the joint to adjust the appropriate angle. Note: Please allow a measurement error of 1-2cm for manual measurement.