Upgraded Adjustable BeamConfused with the running light can't adjust the angle? This humanized running light adds adjustable beam design, meets runners' requirements for uphill and downhill, keep your running safe and prevent accidental tripping effectively Brighter and visible all around chest lamp illuminate the path in front of you up to 25 meters away, see ground situations clearly. Rear flashing red lights plus a high-visibility reflective strip stay visible, maximize the safety of your night run Lightweight Hands-FreeOnly 5.6oz in weight, no burden for activities nights out, stretchy adjustable strap design makes it more comfortable and easy to wear, great for different body shapes and no tight feelings USB rechargeable and waterproofNo more wasting money about batteries, 550mAh large battery easily charged by computer, power bank. IP65 waterproof without worry of rainy day in outdoor activities Multi-use for outdoor safetyEquipped with this bright chest light, don't worry about exercising anymore in gloomy weather outside. Ideal for outdoor activities like running, jogging, walking the dog, hiking. Essential safety gear for runners, joggers and walkers