1.)lcd pannel, use solar power to get electricity, with4 internal sensors. 2.)with the solar pannel, easy to get solar powr and have a extra usb interface for charging. 3.)sensors are applied in the interior of tire, safe, stable. 4.)monitoring the tempreature and pressure with high degree accuracy, display for 4 tires at the same time. 5.)save gas, 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 protection grade:ip67. 10.)sensor quantity : 4pcs Contact abby to get product pictures.