Product Details: This is a light bulb heater that emits infrared rays to gently warm your pet's body. It emits only a small amount of light, so it won't disturb your pet's sleep. ● Materials: Cover/Steel, Heating Bulb/Glass, Heating Element/Chromium, etc. 【Rated Power Consumption】 20W 【Usage Guidelines】 Heating Bulb 20W: Room temperature +4°C ※ When used in a sealed container. ※ The target temperature may not be reached if the room temperature is extremely low. ※ We recommend using it with the "Minimal Thermo" (sold separately) for more appropriate temperature management. Product Condition: Purchased new on Amazon in November 2025. Used for only about a week. In very clean condition and operation is confirmed. I used it for a Java sparrow, but the temperature was too low with 20W due to illness, so I am selling it because I repurchased a 40W one.