This 60W pet heater has optimal temperature control for small animals and reptiles. It's a thermostat set. Operation has been confirmed, but the lifespan of the bulb is unknown. No returns accepted. - Type: Pet Heater - Power Consumption: 60W - Temperature Control Range: 15-40°C - Thermostat: Electronic Thermostat - Applicable Animals: Small animals, birds, reptiles Thank you for viewing.