12V. Left & right 1" (25.4mm) inside diameter; complete with internal throttle sleeve. 145mm overall grip length. Comes with an integrated push button thumb switch; used for controlling on/off and the 5-step colored LED displayed heat levels; green (coolest); blue; yellow; orange and red (warmest). A ''low-voltage battery protection system'' (11.5V or lower) will automatically shut down grip heating to prevent starting problems.
