Our highly visible flashing safety light contains five LED lights and allows you to choose from six separate flashing patterns. A belt clip, bike mount, and an adjustable elastic arm strap are included to ensure your safety during all outdoor activities. Requires two AAA batteries (not included). Specifications 6 Functions: Steady, 2 kinds of flashing, 3 kinds of running light Super Bright LED up to 2500 ft Uses 2 AAA batteries. Lasts up to 200 hours on 2 AAA batteries Weight: 32 Grams