36V blue digital volt meter. This voltage meter will give you a real time voltage reading from your batteries. You will never have to risk being stranded from your batteries going dead.

Display Color: Blue

Dimensions: 1.6″ x 1″ x 0.79″

Refresh Rate: 0.5 Second

Design: Waterproof, Dust-Proof, Shock-Proof
The meter is extremely easy to wire. Just connect + to + and – to -. If you want to connect it through a key switch then connect + to switch, switch to battery +, and – to -. Please let me know if you have any other questions I can assist you with. Thanks again.