`` comfortable to extremity tire pressure gauges '' The unit supports one-hand operation. Simply the lock-on air spue and place the spue period of play any Schrader-type tire valve. tire pressure with the trigger released, or pull the trigger to inflate -LRB- you need to connect an air compressor with the warm connective coupler point -RRB-. Package 1 x Digital tire gauge 1 x Rubber Hose 1 x individual furnishings 4 x Color tire valve caps 1 x User practice 1x 90 degree valve extender 1x Taflon tape 2x O-ring Product Specifications Power Supply : 3V -LRB- 1.5 V x 2 -RRB- Operating Temperature : - 20 °C ~ + 40 °C / - 4.0 °F ~ + 104 °F Measure Range : 0 ~ 150 PSI / 0 ~ 10 Bar / 0 ~ 10 Kg/cm ² / 0 ~ 1000 kpa Resolution : 0.05 kg/cm Accuracy : + / -1 % +0.5 PSI -LRB- comparative Temperature 25 ? -RRB- . : LCD digital display .