STEELMATE TP-79 DIY Wireless Large LCD Real-time Monitoring TPMS with Adjustable Display Angle Cigarette Plug Diverter 4 External Valve-cap Sensors Tire Gauge Model (20-50 Psi) User-Friendly Model - Convertible Psi / Bar Pressure Units for flexible selection CIG Cigarette Lighter Power Support Tire Pressure Monitoring System with Anti-theft Valve-cap Sensors More than a TPMS! - High cost effective model comes with a Car Charging Plug Diverter All-at-a-glance Large Clear LCD display, Real-time Temperature Monitoring Available Long batteries life more than 3 years if you drive 3-4 hs per day, only for family sharing car model, if your cigarette diverter is too deep, this TPMS is unworkable