1. 4 Pcs 25W Heat Lamp Bulb: 25W heating lamp is suitable for small pets and small pet boxes. It won't burn small animals easily. And you can use 2 25 watt ceramic heat emitters alternately to extend the life2. Features: This emitting heater provides 24hours constant heats for reptile's environment. It could last 9000-15,000 hours, even longer3. Non Light Emitted: Compared with other lighting lamps, no light, emits a natural sun-like infrared heat. Neither interfere with the animal's natural rest, it will not interfere with people4. Perfect for High Humidity Terrarium: High strength ceramic package element, suitable for humid environments. Increase the ambient air temperature in the terrarium