JPD120V-650CF/UA For Enclosed Halogen Fixtures This ushio fbx lamp 650w is a tungsten halogen bulb used in theatrical and other professional light fixtures. it is compatible with units that have an r7s base and a rating of 650w. it has a color temperature of 3,200k and an average life of 100 hours. watts 650 volts 120 base type r7s (recessed single contact) bulb type t-5 lumens 16000 filament cc-8 operating position universal bulb finish frosted maximum overall length (mol) 3.161 in (80.3 mm) 0.591 in (15.0 mm) 120 button photocell included. photocell is only compatible with 120v for use at 10' - 15' mounting height heavy duty die cast aluminum housing and door silicone gasket seals optical compartment 6,400 lumen lamp supplied these light bulbs have a longer life and a higher light output than incandescent bulbs these bulbs have a whiter and brighter light and less blackening, dimmable with most dimmers applications: interior, interior recessed lighting, track lighting, security lighting