Just plug it in and it's ready to use. A must-have for birds that are sensitive to the cold. Operation confirmed. Instruction manual included. Box included. Receipt from purchase included. SANKO E55 External Bird Heater - Model: Bird Heater - Power: 20W - Features: Energy-saving and eco-friendly design - Application: Heating device for small birds - Country of manufacture: Japan Used for two winter seasons by a budgie since 2020. Purchase price: ¥7128 There is no damage to the cord, etc., but please understand that this is a used item.