LED RUNNING ARMBAND WITH HIGH VISIBILITY: Made of highly reflective material, the reflective armbands led has a strong reflective effect and is highly visible in the dark. Running light armband makes night sports safer and convenient for you.<br> SIZE ADJUSTABLE LED ARMBANDS FOR RUNNING: with velcro buckle design, the running lights for runners armband can be adjusted at will between 28 and 32 cm, which is suitable for most men, women and children. Just adjust it to the suitable position and you can use it and wear it on your wrist, arm or ankle.<br> LIGHTWEIGHT & 3 LIGHTING MODES: Weighs only 20g, the led armband is very light and no burden even if you wear it for a long time. This running armband light with bump switch design is easy to use by pressing the switch. There are three different lighting modes, which are fast flashing, slow flashing and continuous bright.<br> RECHARGEABLE BATTERY: Our led reflective armband is equipped with two USB charging cables, which is rechargeable and no need to replace the battery. The LED armband light takes about 2 hours to charge and can be used for 4-5 hours, so you don't need to worry about the battery running out of power even if you are outdoors for a long time.<br> SUITABLE FOR VARIOUS SCENARIOS: This running armband lights for runners is ideal for use in darkness, night, rain, fog, cloudy and other low visibility conditions. Perfect for many outdoor activities for men women and kids, such as cycling, jogging, dog walking, mountain climbing, running, camping.