Easy to use. Self-calibrating digital tire pressure gauge. Suitable for measuring the pressure of both car and truck tires. Backlight. 30 sec auto power-off. 4 measurement units psi/bar/kPa/kg/cm². Replaceable AAA/LR03 batteries (2 pcs). Measurement scale reading accuracy. 0.2 psi/0.01 bar/1 kPA/0.01 kg/cm². Measurement accuracy +/-1%.