New lithium rechargeable external motorcycle tpms Tire Pressure Monitoring System,support bar and psi unit,external motorbike tpms ,OEM/ODM service 1.Use lithium rechargeable battery to get electricity,with 2 external sensors. 2.LCD pannel,with extra mini USB port for charging. 3.Light weight design for sensor,no need to adjust to balance when the tire moving. 4.Monitoring the tempreature and pressure with high degree accuracy, display for 2 tires at the same time. 5.Save fuel,forsee air leakage,reduce tire wearout,balance tire pressure,ensure safety driving. 6.RF wireless technology,can auto-alarm,when tire pressure and temperature is abnormal. 7.With two pressure unit"PSI,BAR " and two temperature unit"℃,℉" for option. 8.Support tire position exchange function. 9.Sensor waterproof grade:IP67. 10.With FREESCALE Chip and RENATA anti-explosion battery.