Feature: 1. LED safety lights with luminous bands help to improve visibility and safety at night, making running, walking, biking and other outdoor sports safer at night.2. Lightweight and comfortable to wear, it is not restricted by movement and will not cause even if it is directly attached to the skin. 3. Adjustable hook and loop strap can be adjusted to fit almost any arm size, just tie it to your arm, wrist or calf, press the button and use it. 4. The 3 gear lighting mode can be switched freely, there are fast flashing, slow flashing, and constant light. 5. Suitable for outdoor night sports, such as jogging, walking, cycling, concerts, camping, outdoor sports, etc. Specification: Item Type: LED Armband Material: Nylon Webbing+Plastic+PU Fiber Color: As Picture Shown Width: Approx. 2.5cm/1.0in Wristband Circumference: Approx. 28cm/11.0in Expand Length: Approx. 33.5cm/13.2in Weight: Approx. 30.0g/1.1oz Power Supply: 2Pcs CR2032 Button Batteries 200mAh (built-in) Package List: 1 x LED Armband |