BRIGHT WHITE LIGHT
Each bulb comes with a cap and plug cover.
Bulbs screw into regular light socket and functions as a normal LED bulb; runs off 110v or 220v. While bulb is in regular use, back-up battery will charge. When power is interrupted, your light will automatically come on. Bulb can be removed from the socket and used with the screw on cap for a portable light source/flashlight.
Caps: Screw on cap turns each bulb into a portable light source/flashlight with a manual on off switch.
Plug covers: Allows bulb to be used in a lamp fixture when not plugged into the wall in case lighting is needed in an area without a wall socket. The cover "completes the circuit" to allow the battery current to power the bulb.