Updated Running LightThe red taillight with flashing warning triangle for better visibility from oncoming traffic car drivers. That allows it to illuminate the ground and slopes very well, which also dramatically reduces glare from reflecting back to your eyes. With 3 Lighting Modes3 light intensity settings (high/low/strobe) for any situation.You can change it by pressing the red button. USB Rechargeable This running light comes with a USB charging cable that can be used after each use to ensure you are always visible when need be.via the included USB cable which is based on a powerful rechargeale battery. Adjustable Strap Elastic Chest BandThis running light with flexible strap and adjustable length for comfortable wearing. Fully adjustable fit for runners large and small, just like the straps on a headlamp, you can tighten and loosen the straps to fit your needs Widely ApplicationThis Rechargeable headlamp is ideal for running, camping, hiking, hunting, fising, climbing, biking, cycling, construction work, auto repair, walking and other indoor/outdoor activities.