Combination Voltmeter, USB Charger and Power Switch. Draws no power when off. Handlebar mount with terminal rubber boot. Fits handlebars 3/4", 7/8" and 1.0".
The on/off switch turns the power off to the device when not in use. The snap over waterproof front cap is translucent so you can see if the device is on or off with the cap on.
The digital voltmeter comes in red or blue. digits, reads to 30 VDC.
The USB charger is a powerful 3.1 amp output equivalent to factory supplied chargers for most cell phone manufactures.