Brand: RadioShack. MPN: 2202000. RadioShack Digital Tire Air Gauge Model 2202000. One button operation, simply press the power button to turn on the device and select the range. Automatically turns off 30 seconds after use to save battery life. 
The ergonomic shape is complemented by a non-slip texture for maximum comfort and control; Powered by 2 LR44 batteries (included).
Take quick tests to check the condition of batteries in a practical way.