Two Light Modes WITH Long Batttery Life :continuous and flashing ( press the button one time is the continuous light mode, press 2 times flashing light mode ), battery life of up to 80 hours. Multiple use: can be worn as an armband, on the leg or ankle, a trouser clip, attached to a bike helmet, to a backpack and much more. Suitable for outdoor sports, night running, large-scale festival party, concert, promotion, cheer, employee benefits, corporate events and so on. Ideal for anyone wanting extra visibility, particularly when in dark or low light - walkers, school children, runners or when cycling. Adjustable for Anize: The elastic bands make it easy to adjust for a loose or snug fit. Delivery Quantity: 1pc Product color:green Product size:8.5cm*2.2cm