2-way heater for small animals with high and medium/low temperature settings. - Brand: GEX - Product Name: 2-Way Heater S - Application: Heater for small animals - Size: Approximately 26.5 x 36.5 x 1.6 cm - Features: High and medium/low temperature settings - Waterproof: Splash-proof - Cord protection cover: Cord is difficult to chew Thank you for viewing. No instruction manual, and 2 springs (or similar) are missing. I have confirmed that it powers on. I purchased this 2 years ago for my birds, but it was too low-temperature for them, and the cord wouldn't fit through the birdcage, so I didn't use it and stored it at home. Therefore, there are no signs of chewing or dirt from small animals, but please understand that this is a used item before considering purchasing. Also, I am working, so my comments and replies may be delayed. Thank you for your understanding.