Extra bright high intensity, 7 FUNCTION LED LIGHTS have 7 functions with different flashing patterns. Includes heavy duty pvc bike mount, arm or wrist strap and belt clip, Can be worn like a pager. A must for every biker, runner, child, or stranded motorist. Uses 2 AA batteries (lincluded) This item is a great way to be seen in the dark and to locate or keep track of your children. great for night time activities like Holloween.