High Visibility and Reflectivity - The Led armband is clearly visible in the dark, its material can reflect light. Therefore, the LED armband can prevent some potential hazards during morning walks, evening walks or walking the dog. Two Lighting Modes - The light strip has three lighting modes: fast flashing, uniform glow, you can choose any one of them as your preferred mode for outdoor activities. Weatherproof with non-slip elastic band - running reflector body 18.5*3.5*1cm elastic band 12-17cm wide 2cm. Fits most men, women and children. You can wear them on your wrists, ankles and arms. INTERCHANGEABLE BATTERIES - Powered by two CRV2032 lithium button batteries, the wristband can work for about 60-80 hours. The battery can be replaced when the current is low. Where to use the LED armband? This LED armband is a must have for outdoor activities. You can wear it on your upper arm, wrist or ankle when jogging or walking the dog. You can also pair it with your backpack or bike when hiking or biking. The LED armband adopts high reflective materialand high visible light, which can prevent potential danger and keep people safe. What are the advantages of our LED armbands? bright lights. With reflective material, our LED wristbands are brighter than similar products, ensuring outdoor safety. better quality. Beautifully sewn with high-quality nylon material and environmentally friendly transparent PVC material, the LED armband is easy to use. Shipping Quantity: 4 pieces Package Contents: Only the above package content, other products are not included. Size: 18.5*3.5*1cm (Reminder: The size is measured manually, please allow 1-2cm measurement error) Color: green (Due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture color.) Products from LUOLV's store