LED SAFETY ARMBANDS: Highly increasing visibility and safety during early morning night sports and outdoor activities. You can be seen in the dark when running, solo riding, walking dog, camping etc. Package Included: 2-PACK rechargeable armband with 2PCS usb charging cables. RECHARGEABLE & CONVENIENT: Each safety band comes with a USB charging cable. It can be easily charged by any USB port. Long battery life: less than 2 hours to be fully charged but can be used more than 6-10 hours. No hassle with replacing batteries and no extra costs. DUAL GUARANTEE & WEATHER RESISTANCE: Built in LED flashing light with reflective material surface: When the LED lighting is switched off or its battery drains, the armband still can provide visibility and safety. Can be used in most weather conditions, a must have in early morning /night and especially in winter foggy days. SIZE ADJUSTABLE: Total length: 35cm. Width: 2.5cm. Fits size from 28 to 32cm, suitable for men, women and children, by simply wrap it to wrist, ankle, arm and leg, or tied on bike, helmet, schoolbag, backpack, anywhere you prefer. Fabric and elastic makes the bracelet sweat resistant and comfy to wear. Compact and light enough to carry. FOUR MODES: fast flashing, slow flashing, continuous bright and off. Give 360 degree of visibility to you and warning to motorists in advance, avoid hazards in the road. Modes are easily selectable at the press of a button, easy to access. Perfect for child safety, roadside safety, construction, law enforcement and airport personnel.