Voltage 5, Wattage 1, Amps .2, Base E5 W/PIN, Shape T1.5, Overall Length (mm) 25MM, Mentor - 22-4007 Fix for Slit Lamp - HS0900-1551 Replacement Light Bulb Mentor - 22-4007 Fix for Slit Lamp - HS0900-1551 Replacement Light Bulb - Equipment to Lamp - Mentor - 22-4007 Fix for Slit Lamp - HS0900-1551 Replacement Light Bulb