Feature:1. Adjustable strap, which can not only fit different figures, but also can firmly fix the light on your body through a stable triangular structure.2. Three lighting modes for you to choose, including high/medium/flashing light mode, which can meet your different needs.3. USB charging, builtin 2000MAH rechargeable lithium battery, continuous output, easy to use, can be connected to power bank, laptop, mobile phone charging head.4. Adopting highquality acrylic + IPX65 waterproof design, it is safe to use outdoors, dustproof and rainproof, heatresistant and corrosionresistant, and has a long service life.5. Wide range of applications, suitable for night running, camping, hiking, jogging, walking, fishing, cycling, mountaineering, adventure, etc.Specification:Item Type: Night Running LightMaterial: Acrylic Color: As shown in the pictureFront Lamp Size: Approx. 4.8x4.8cm / 1.9x1.9inBack Lamp Size: Approx. 10x5.5cm / 3.9x2.2inWeight: Approx.205g/7.2ozApplication: Chest running lightBattery: 1 x 18650 rechargeable lithium battery, 2000MAH(Included)Light Color: 3 white lights + 8 red lightsCharging Time: 2-3 hoursUse Time: 2-5 hoursWaterproof Rating: IPX65.Package List:1 x Night Running Light1 x USB Cable1 x Instruction ManualNote:1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.