Upgraded Adjustable BeamConfused with run light cant adjust angle? This humanized run light add adjustable beam design, meet runners' requirements for upward and downward slopes, keep your running safe and effectively avoid accidental tripping Brighter & All Round Visible500 lumens of chest lamp lights up the path ahead of you up to 25 meters, clearly see the ground situations. Back flashing red LEDs plus high viz reflective band stay visible, maximum the safety of your night running Lightweight amp; Hands FreeOnly 5.6 oz in weight no burden for night activities, stretchy adjustable strap design makes it more comfortable and convenient to wear, ideal for different body shape and no tight feelings USB Rechargeable & WaterproofNo more waste money on batteries,large battery easily charged by computer, power bank. IPX-5 waterproof no worries about rainy day in outdoor activities Multi Usage for Outdoor SafetyEquipped with this bright chest lamp , no more worry about doing exercise in dark outdoors. ideal for outdoor activities like running, jogging, walking the dog, hiking. Essential safety gear for runners, joggers, and walkers.Return amp; Quality Guarantee:the chest run lamp can be returned within 60 days. Your satisfaction is our unremitting pursuit, you have no risk to try