Features 1、More Safety: With white lighting in the front and red lighting in the back, helps you see and be seen in the dark more easily and clearly. Run or walk using your favourite routes even if it's dark. 2、Night Running Light: High performance optical acrylic transparent light cover, lighting distance of 20‑40 meters, ensuring the safety of night running. Adjustable brightness and flashing modes, suitable for various outdoor sports. 3、USB Rechargeable: Built in 550mah battery, chest light is easily charged by computer, power bank. Ideal for outdoor activities, night running, walking, jogging, camping, hiking, fishing. 4、Lightweight and Comfortable: Very lightweight with its flexible strap, adjustable length to ensure comfortable wear. Suitable for most people use different sizes. The running chest light will assist you in venturing out during the dark and achieving your goals. 5、Night Running Accessories: There are the days when going for a run just feels right. There are also days when running conditions aren't so favorable. A big factor in keeping motivation high is ensuring you have the right equipment. Lightweight, USB chargeable running light is your great choice. Item Type: Chest Light Material: Plastic Battery Type: Lithium Polymer (Built in) Battery Capacity: 550mAh Charging Interface: Micro USB Package List 1 x Chest Light 1 x Charging Cable 1 x User Manual