3mm x4 FLASHING Blue Star Wars Set 9v Clip (79 ratings) £3.99 Quantity: at £3.99 each Add To Basket x4 3mm Neon Blue FLASHING Ultra Bright Leds. Leds flash independantly approximately twice per second 160mm Wire loom length from screw terminal connector. 9v Battery clip included. Set operates between 4v and 12v dc. Screw terminal connector to allow easy fitting to existing circuit or the addition of further leds.