The Mobile Warming Bluetooth-enabled battery powered rover heated dog vest is designed to keep your pet warm in cold weather conditions. From hiking to hunting or on a walk in the park, the rover heated vest keeps your pet warm and comfortable in any activity. A rechargeable lithium-ion battery powers the rover's light-weight shell, which powers large heat zones across your pets back to keep them warm for hours. The rover vest allows you to change the temperature on-the-fly Wirelessly. *The rover vest features our exclusive Bluetooth technology to select from four heat settings to keep your pet warm and comfortable all day. Age Group adult.