keep water from freezing: Heated water bowl keeps water from freezing at -20/-4H, it provides water for pet during the winter no matter what the weather. Safe design: BPA-free plastic, anti chew cord, built-in thermal fuse. We use the best and safest materials to make heated pet bowl, every product has passed strict testing before leaving the factory. The bowl has been tested & certified by MET Labs and exceeds USA/CA electrical safety standards. For ease of use: Without the complicated setup and many steps to use our pet bowl, just plug it in and it will work automatically. Built-in thermal fuse, no need to worry about any dangerous situation Energy efficient: This heated water bowl can hold up to 85 ounces of liquid and has a built-in 35watt heater that keeps the water from freezing at -20/-4H. You don't need to worry about using up too much electricity even if the heating bowl works all night. 100% Satisfaction guarantee: We care deeply about your feedback, and our aimProducts from GuanGuan's store