DescriptionThese sports wristbands are powered by a small button battery and designed with reflective performance, which provides good visibility and allows people to be noticed by vehicles during exercise, keeping them safe at dusk or in the dark.Features- Material: PVC reflective lattice. - Size: 17.00X3.50X0.50cm/6.68X1.38X0.20 inch. - Light-emitting distance: Visible from 200 meters away. - High temperature resistance: 80 degrees Celsius. - Battery: 3V 2032 button battery. - High visibility, perfect for night running, cycling and walking. A wonderful product for policemen and workers also. - With reflective strip design, it can offer high levels of visibility. - Suitable size and lightweight, easy to use and fit so many people well. - Wide range of applications: The LED running armbands can be applied for many outdoor activities, such as running, jogging, cycling, hiking, biking and walking at night, or for other occasions like festival parties, concerts, music festivals and so on. - Super bright, comfortable, soft, easy to use, user friendly, real well thought out design and multi-function. Apply to children, adults and pets.