Karrimor x flare led twin pack this karrimor x flare led twin pack will improve your visibility in low light conditions and are designed to clip to clothing footwear or a head strap included in the pack the white led which is 17 lumens bright and a red led which is 3 lumens bright come complete with the batteries and will last up to 30 hours if on constantly and up to 100 hours if on blinking setting you will not realise you are wearing these leds thanks to the light weight construction