Pink rehabilitation heater for small animals, no power supply required, with automatic heat retention function. - Product Name: Rehabilitation Heater M - Size: Approximately 30 x 16cm - Color: Pink - Application: Heating device for small animals - Features: No power supply required, automatically retains heat when warmed up I used to place this under the case when my birds were chicks, before they made their debut in the birdcage. I purchased this 5 years ago. The condition is good, but please understand that it has been used for several years.