Perfect for large dogs or horses, or where a large tank cannot be used. 130 watts of power. Thermostatically controlled. Sturdy bail allows bucket to be hung in stall. Cord exits from back or bottom of pail to prevent chewing. Tested to withstand temperatures to 20 below zero. The heating element is coiled between 2 walls in bottom of bucket. The cord is 67" long including plug-bottom of bucket has grooves for cord to stick out from either back or side. Keeps water form freezing but does not act as a water warmer.The element is not exposed. UL tested and approved. Thermostat turns on at approximately 38 degrees and off at 50 degrees. Shuts off if bucket runs empty. 1 year manufacturer warranty. The heating element will not turn on until temperature gets cold enough.