Light up your life with this Adjustable LED Sport Wristband Choose from a pack of 1, 2 or 4  Choose from red, blue, green and white  Dimensions: 32cm x 2.5cm  Adjustable in: 27cm x 31cm  Battery: 2 x CR2032 (battery included)  Features 3 settings: fast flash, slow flash or solid light  One size fits all arms/wrists Ideal for running, walking, walking at night or in the dark  Battery life: 60-80 hours Perfect for outdoor sports, night races, large-scale parties and concerts Buying Options:  3.99 pounds instead of 19.99 pounds for 1 wristband - save 80%  5.99 pounds instead of 39.98 pounds for 2 wristbands - save 85%  10.99 pounds instead of 79.96 pounds for 4 wristbands - save 86%