Color/finish: cool white , Color temperature: 4,100K , Average lifetime: 10000 hours , Lumens (light output): 400 Sunlite 60020 PL7/SP27K Plugin U-Shaped Compact Fluorescent Lamp, 7 Watts, 360 Lumens, 2700K Warm White, 2-Pin (G23) Base, 1 Pack Sylvania Dulux S 13w Ushio 3000251 - Single Tube (4-Pin Base) Compact Fluorescent Light Bulb Pl Light Ushio CF7S/841 G23 Base Ultra-S Single Tube (7W/45V/4100K It has a base of G23, manufactured by Ushio and a color temperature of 4100k. Color Temperature (K) 4100K. CA Prop 65 Yes. Color Rendering Index (CRI) 85. Bulb Type Fluorescent Bulbs. Need assistance
