Venture Heat Pro V3 What it is: Professional grade diving undersuit with two heating zones Heat-zones: front & back Runtime: with two batteries, 180-360 minutes depending on heat setting What's in the box: includes heated vest, expansion panel, two 5000mAh 11.1V batteries + charger, remote control watch + charging dock PRO V3 for Wetsuits and Drysuits designed for wetsuits, featuring front and back heating with 2 battery compatibility for double the runtime controllable with wrist remote, with on-vest and on-remote haptic feedback for low visibility touch-control All V3 models utilize our exclusive saltwater-safe carbon nanofiber heating technology in our improved butterfly shape for better heating coverage. All V3 models feature the same heating output at 32 watts, which is about 3x the warmth of our average battery heated non-waterproof apparel. Featured only in PRO V3 and DRY V3 models, our exclusive underwater remote control haptic feedback system allows you to easily control your suit's temperature even when it's layered under other bulky protective gear. The wrist remote control is 100% waterproof and designed to be worn outside of your gear, directly exposed to the water. And yes, your suit can be turned on/off with the wrist remote. All V3 vest models are 100% waterproof to 100 meters or 100 feet. Designed for recreational divers, technical diving, commercial diving, oceanography, cave divers, lake diving, quarry diving, search & rescue, military and Coast Guard, and more