With overload protection on all ranges, 3.75 digital liquid crystal display (LCD), maximum reading 3999. Maximum 450 volts. Range hold, continuity, diode test. Built-in test leads, 2 times per second sampling rate. Auto power off after approximately 10 minutes. Operating environment: 32 degrees to 104 degrees F. Storage temperature: -4 to 140 degrees F. 300 hours typical life with carbon zinc batteries. Operates from (2) LR44 batteries, included. C-77 booklet style carrying case and operating instructionsincluded. cULus Listed to both US and Canadian standards. Meets CE requirements. 4-1/4" height x 2-1/4" width x 1/2" depth.