Nitezone Arm & Ankle LED Reflective armband, Light Safety arm band, Use it as armbands or ankle bands or wrist bands Super bright LED Nitezone highly reflective arm and ankle band, Velcro band LED light, 3 modes (steady and 2 flashing), visible to up to 1/2 mile, battery life up to 200 hours,Battery included (CR2032). water resistant, adjustable to different arm and ankle sizes, Velcro band