Electro-Luminescence is a new technology which provides a clearer display than backlit LCD while at the same time using less power. The result is a stopwatch easy to read in the dark which will provide about 4 hours of continuous illumination. Excellent for HPLC, TLC, electrophoresis, dark rooms, and nocturnal behavioral studies. A sonically welded case ensures excellent water resistance. Large 5/8" high display for good visibility. Counts up to 24 hours with resolution of 1/100 second for the first 40 minutes and 1 second resolution thereafter. Has a lap function, alarm clock and a calendar. Button cell battery included. Weight 2.4 oz (68 g). Dim: 3 1/4" x 2 7/8" x 3/4" (83 x 71 x 19 mm)
Also available with NIST traceable certificate of compliance.