Wireless Motorcycle Tire Pressure and Temperature Monitoring System With Watch product code: 951047 Perfect gift for newborn parents, newborn mother, newborn father, baby shower, birthday, Christmas, festival and so on. Color: Black Material: ABS Display: LCD Display dimensions: 53 x 51 x 28 mm Voltage: 3,7-5 V Frequency: 433,92 MHz (/-50 KHz) Receiver sensitivity: -90 dB Working temperature: -20C to 75C Waterproof Has an alarm system monitoring the temperature and pressure in tires Weight: 51 g Charge the battery before first use Set Contents: Receiver module with display Anti-theft nut wrench Charging cable Mounting bracket for steering wheel Anti-theft nuts Wireless pressure and temperature sensors Instruction The magnetic charging port eliminates the danger of water getting into the case, as can be the case with devices charged via a USB port.