UPGRADE 90 ADJUSTABLE BEAM ANGLEWe upgraded out this Running Lights with new original designs of upwards 45 plus downwards 45 Adjustable Beam Angle that allows it to illuminate the ground and slopes very well, which also dramatically reduces glare from reflecting back to your eyes. The light being adjustable on a swivel will satisfy you to see far enough ahead to avoid hazards in the road. And it won't bounce around like a headlamp since it's almost attached to your center of gravity.SUPER BRIGHT RUNNING CHEST LIGHTThe 90 tiltable running light for runners is brighter than most lights in the market, packing a powerful 500 lumens behind the industry leading Cree L2 LED and offer 2 light settings: low and strong, which are crafted to replicate a spotlight. The burn time of Low lights can offer 10 hours of visibility whereas Strong offers 4 hours. The lights surround the entire casing to make sure there are no blind spots even as you move with your stride.USB RECHARGEABLE & WATERPROOFThis running light comes with a micro USB charging cable that can be used after each use to ensure you are always visible when need be. It takes about 5 hours to fully charged via the included micro USB cable which is based on a powerful 2200mAh rechargeale battery. They offer an IPX-5 waterproofing that West Biking back with a 3-month guarantee. You won't have to worry about getting stuck in a dark rainy situation without visibility.LIGHTWEIGHT & HIGH PERFORMANCEWear the light on your chest address the key problem for runner who don't like to wear lights on the head as it may be very uncomfortable and easy to slipped due to sweat. Compared with that, our chest lamp is much lower in weight(only 160g), won't be very noticeable when youre moving. Whats more, you can grasp the switch position of the chest light intuitively, but it's hardly to reflect the headlight's with your first thought, only by tentative trial