Description: 【COB Running Light】This COB light up armband is designed with COB light beads, big floodlight, wearable, great for night walking, running, biking, etc. 【3 Adjustable Light】The COB safety light armband is designed with white light, red light, red and white flash light, 3 adjustable light to meet different needs. 【Waterproof and Light】The light up bracelet is waterproof, sweat resistant, moisture absorbing and drying quickly , lightweight, comfortable wearing. 【Buckle Design】The COB light up armband is made of high quality material, flexible, with buckle design, free to adjust the tightness, non slip and not easy to loose. 【Multiple Using Ways】The COB safety light armband is for 1.5 hours charging time for 2.5 hours white light, 2.5 hours red light, in size 38cmx3cmx1.5cm/14.96inchx1.18inchx0.59inch, comfortable to fit on wrist, arm, ankle, etc. Specification: Material: ABS TPE Color: Gray Size Chart: 38cmx3cmx1.5cm/14.96inchx1.18inchx0.59inch Package Includes: 1 LED Armband Light 1 USB Cable(2 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.