12 Red LEDs. To suit 1.10 scale models car or truck shells. Simple LED lighting system recommended to be used with lighting buckets. Buckets are not included. Simple on off switch. This set would be powered by any 27mhz 35mhz 40mhz am and fm or 2.4ghz receiver which must be running by an esc. Can be powered directly from a 6v DC battery pack. Measures 97.76mm x 8.98mm wide.