-Battery voltage/type: 3V/L lithium.
-Size: 51x51x33mm (2" x 2" x 1-1/4").
The digital angle gauge is a mini waterproof digital protractor that provides digital readings between ±180° with a resolution of 0,1° and auto shut off after 5 minutes. It is small enough to be carried around in a pocket and the LED screen is convenient to read. It incorporates magnets in the base for adhesion to any ferrous surface to accurately measure mitre and bevel angles on mitre saws, saw benches, etc.|