Used for keeping lizards. No longer needed as the lizard passed away. The light turns on. Includes a used 75W light and an unused 50W bulb. The box for the unused spare bulb has some scratches, but the contents are unused, and I have confirmed that the bulb works. Clip-on Lamp - Type: UV Lamp - Clip Type: Yes - Voltage: 230V/110V - Maximum Output: 200W Thank you for looking.