Features:

• Convenient digital tire gauge and key chain
• Reads tire pressures from 5-99 PSI (in 1/2 lb units)
• Permanent lifetime lithium battery, turns off and on automatically
• Rugged ABS construction
• 1 year warranty

Editor Reviews:

Product Description:
Keychain Digital Gauge in black with larger display

Rating : - Cheap and simple to use
Took me about 10 minutes to check, fill (w/ another item I brought on Amazon), and re-check all 4 tires on my car. A simple and useful tool to keep in the trunk.