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. It is a convenient USB rechargeable type, and the charging time is 50 minutes. * High Visibility The LED lights are brighter than conventional reflective bands, reflective sashes, and reflective vests. 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, etc., avoiding unexpected collisions. * Easy to Use One-touch attachment with one hand, the surface of the main unit is specially processed with reflective ink, and the fabric on the back uses a soft material that is gentle on the skin. * Applicable Sizes It can be worn on the wrist, arm, ankle, etc., and does not restrict the place of attachment. It fits with just the right amount of tightness, providing a very comfortable fit.