Sport Direct MegaWatt 1 x 0.5W & 2 x Mega Bright Red LED's Bicycle Rear Light 20 Lumens LED Visibilty 600 Metres, 1 x 0.5W & 2 Red LED's, Waterproof Modes: Flash 14hrs/Constant 7hrs 1 x Parabolic Reflectors = Extra Visibilty, 20 Lumens Mounting Bracket For Attaching To A Bike, Bag/Belt/Dog Collar Clip 2 x AAA Alkaline Batteries Included