40W heat ceramic for small animals. Used for 3 days (nights only) after purchase, but unfortunately, the temperature didn't rise as expected in my pet's cage. I purchased a new 60W heat ceramic, so I am selling this one. There are no operational issues. This product is a replacement bulb for MLP-153 "Heat Ceramic 40W". It cannot be used on its own. - Invisible far-infrared rays gently warm your pet's body. - Does not emit light, so it does not disrupt your pet's natural sleep cycle. - Ceramic, so it is less likely to break and has a longer lifespan compared to glass bulb types. - Retains heat well, providing excellent insulation. 【Material】 Ceramic bulb: Ceramic Heating element: Chromium, etc. ※ The box in the photo is 60W, but the contents are a 40W ceramic bulb.