No assembly required. Removable 80 watt heater makes this 1 gallon Birdbath usable all year round. Cord length is 5-1/2 feet long. Attractive stone color will fit in with any backyard décor. Thermostatically controlled to only turn on when needed. Made from durable plastic resin. Keep the ice out of your birdbath. Holds up to a gallon of water. Heater is removable for summer use. MET listed