ODOP9000 O'Donnell TGX1 Temperature Gauge With Stopwatch. It's two engine tuning tools in one!

 - The TGX-1 provides an extra level of insurance by measuring engine temperature to prevent premature breakage due to overheating.
 - Also features a stopwatch function that takes lap times for confirming engine performance.
 - Yellow backlit LCD screen makes for easy reading at night or indoors.
 - Auto-off features kicks in after 15 seconds to conserve battery power.
 - Comes with a long-lasting, non-rechargeable lithium battery and a protective carrying pouch that can clip onto a belt for convenience.