The kit is probably the most realistic answer to adding a flashing tail lamp to the end of your stock. No unsightly LEDs glued on to the back of your train, but a realistic pre-painted BR style tail lamp. For coaches and wagons, the kit features a cast prepainted tail lamp, fibre optic and the electronic components. A 9v (PP3 type) battery and limited soldering ability is needed to complete. Kit includes full instructions and diagrams. Battery not included.