Specifications: Bright LED for active illumination. Considerate design, easy and convenient to use, portable and durable. Protect your safety when you are walking, running, riding or doing other outdoor sports in the dark night. Built-in LED light inside the nylon band which is adjustable and secure. Powered by 2pcs of removable CR2032 button cells, energy saving and environmentally friendly. The lit time can last for approximately 60 - 80 hours and you can replace the battery when it dies. Type: LED Armband Material: Nylon Webbing Powered by: 2 x CR2032 Button Batteries(Included) 3 Flash Modes: Quickly Flashing, Slowly Flashing, Lighten-up(Controlled by the Button) Size: 32cm x 2.5cm/12.60" x 0.98" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included: 1 x LED Armband