EXELAIR by Milton (EX999005) 5-in-1 Digital Tire Gauge Auto Emergency Tool DIGITAL TIRE PRESSURE GAUGE: Measures in PSI (5-100), kPa, and Bar readings. 5 MULTI-FUNCTION TOOLS: Emergency glass-breaker hammer (retractable), safety seatbelt-cutter, LED flashlight, red warning light, and tire pressure gauge. EASY PUSH: Light (on the left) and Gauge (on the right) buttons. Digital display screen for accuracy. CAR SAFETY/MAINTENANCE: Optimal auto emergency roadside assistance tool for your car. These make great gifts for those you care about. AUTOMATIC SHUT-OFF: Features an auto shut-off to save battery life. Batteries included (2 AAA).