BE VISIBLE, BE SAFE - This LED armband is powered by a small coin cell battery and provides ultra-high visibility during dusk and nighttime activities. Keeps you safe when doing outdoor activities at night, such as running, jogging, cycling, and hiking.

Rechargeable - In addition to ensuring the LED armband works correctly, this running reflector has an improved battery in a rechargeable design. 2 hours charging, 3-5 hours working. Practical, user-friendly, and money-saving.

Lightweight and comfortable to wear - only 25 grams. The armbands are lightweight and suitable for wearers of all ages. Velcro design, easy to use. Even if you wear it for a long time, it will not put any burden on you. Comfortable to wear, no feeling at all.

ADJUSTABLE - Sizes are adjustable from 11 \"-14 \", just adjust according to your needs. (Manual measurement, there is a certain error, please refer to the actual product!)

Full charging time: about 1-2 hours; each use: 2-5 hours