Clip-On Stopwatch is a full function stopwatch packed with features including: • Single event, start/stop and lap functions 1/100th second resolution • Calendar • Thermometer in ºF Compass • Counts up to 24 hours. Clip to your key chain or belt loop and have it available whenever you need a stopwatch. Although tiny and weighing only 1 oz (27 g), Clip-On Stopwatch’s large LCD and buttons make it comfortable to work with. One button cell battery is included. N.I.S.T. traceable certificate of compliance available. Dimensions: 2” x 1½” x ½” (55 x 35 x 15 mm) Weight: 1 oz. (27 g) .