Protector and Charge Monitor, Color Black, Connection Material Copper, Max. Voltage 12V, Length 20 in, Width 2 1/8 in, Height 3/4 in, Depth 1 3/4 in, Features Protects And Displays The Condition Of Your Battery With The Push Of A Button, Protects And Displays The Condition Of Your Charging System With The Push Of A Button, Protects Engine Computer And 12 Volt Accessories From Damaging Surges When Jump Starting Or Recharging, For Use With 12V Electrical Systems WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -