High Visibility Day and Night - combined the led bracelet with the waterproof reflective band, this rechargeable led armasrd is ideal for signaling on the road in the daytime, more visible at dusk, at night or in rainy weather For Arms Muscular; Slim - New Elastic Band which is adjustable from 28cm up to 32cm, allows this led light bracelet to be worn on the wrist, biceps, calf or even the bun, suitable for men and also women; As for children, you can hang it on their backpack Rechargeable version - no more worry about changing single-use batteries, this usb led armband is rechargeable everywhere, more ecological and economical, mini usb cable and storage bag are also provided How Does It Work? Simply press the button and the LED light armband will shine brightly, 3 visual effect modes to change (continuous, flash and flashing) allow you to experience extraordinary sensations For All Your Events - except cycling or running like jogging or walking the dog, this led bracelet will find its place on all possible and imaginable themes: discos, bars, party rooms, concerts, parties and festivals