Thank you for viewing! This is a rechargeable, wrap-around reflective band with a flashing light function. Set Contents: Main unit x 2 Suitable for: Running, jogging, walking, commuting to school, dog walking, returning from work, cycling, traffic control, strolling/walking Product Specifications: * 3 Lighting Modes The LED armbands have three lighting modes: fast flashing, slow flashing, and constant light. They are waterproof, sweat-absorbent, breathable, odor-resistant, quick-drying, and durable. * USB Rechargeable Despite being an ultra-lightweight model, it can be used continuously for approximately 8-10 hours. Convenient USB charging, with a charging time of 50 minutes. * High Visibility The LED lights are brighter than conventional reflective bands, reflective vests, and reflective sashes. They appeal not only to cars but also to unlit bicycles and pedestrians during nighttime running, jogging, walking, commuting to school, dog walking, returning from work, cycling, traffic control, strolling/walking, and help to avoid unexpected collisions. * Easy to Use One-touch attachment with one hand. The surface of the main unit has a special reflective ink, and the fabric on the back uses a soft, skin-friendly material. * Applicable Sizes Suitable for wrists, arms, ankles, and other areas. It fits with just the right amount of tightness, providing a comfortable fit.