ELASTIC ADJUSTABLE SIZEIncreased elasticity design, with greater elasticity than normal LED armband, adjustable from 28.5-41cm. Unisex, you can wear it on your wrists, ankles, arms and legs, or tie it to a bicycle or helmet, whatever you want. If children use it, they can hang it on their schoolbags.UPGRADED RECHARGEABLE DESIGNExcept the ensure the led armband works well, running reflectors improve the battery in rechargeable design.1 hours charging, 5-8 hours working.Compared with the general LED armband, it shortens the charging time, extends the working time, is more convenient and saves money.MULTIPLE MODESFast flashing, slow flashing, steady light and off. A variety of visual effect mode changes are realized by adjusting the buttons, making your outdoor activities safer.KEEP PROTENTIAL DANGER AWAYLED armband can improve your visibility and safety in outdoor activities.Widely used for rain, fog, dark,cloudy,night and other low visibility conditions,Lanpard LED armband is suitable for all your activities,such as: walking, running, walking the dog, cycling, hiking, camping, bar, party and so on. Package Included: 2 * Lanpard LED Armband & USB charger & a storage bag.We provide a 12-month replacement warranty or a full refund for quality issues.