LED Lighting Kit with Switch Fully Assembled lighting kit for leds with pre-attached mini-switch for almost Plug and Play use. All in one light package. To be used with a standard coin cell CR2030 (3v), not included in the kit. To help wire conections use shrink-tubes also available at our shop. Length of the wires: 120mm + 120mm Cell holder size: 22 x 3.2mm