[Super Bright LED Lighting and Reflective Material] Increase your visibility and safety during your night sports activities. Be visible in the dark while running, biking, just walking your dog or doing other outdoor activities. Brings higher visibility than other reflective sports accessories. [Adjustable Size] The light strips, 28-40cm in length, are adjustable. They are suitable for most men, women and children. You can wear them on the wrist, ankle and arm. Of course, you can also use the LED wristband on your backpack, bike or jacket. [The Light Strip has Three Lighting Modes] Fast, slow flash, constant glow, you can choose the one of them as your favorite mode when doing outdoor activities. [USB Rechargeable] No need to change batteries, no batteries polluting the environment. Recharges easily using any USB port. [For All Your Events]Except cycling or running like jogging or walking the dog, this led armband will find its place on all possible themes and imaginable: discos, bars, party halls, concerts, parties and festivals. Retractable light strip made of stretch fabric. How to use the LED bracelet - Remove the insulating film. - Press the button once for quick flash. - Double tap the button for slow flash. - Press the button for the third time for continuous light. - Press the button to turn it off. Technical characteristics: Power supply: USB charge.Lifespan: 10 hours.Bulb type: LED. Number of LEDs: 1 piece.Bulb specifications: Fixed bulb.Materials: Plastic, nylon, Velcro tape, reflective PV tape. Weight (per band): 32 g.