Features 1、IPX4 WATERPROOF: Night running light offers IPX4 waterproofing, so you don't have to worry about being stuck in a dark, rainy day with no visibility. 2、SWIVEL LIGHTING: Chest running light supports rotating lighting that allows you to see far enough ahead to avoid hazards on the road. 3、COMFORTABLE FIT: LED running light comes with an adjustable length flexible fastening strap that provides a comfortable fit for most different body types. 4、ADJUSTABLE: Chest light supports 120 degree angle adjustment (60 degree up, 60 degree down), which can illuminate the ground and slope well and reduce the reflected glare to the eyes. 5、USB RECHARGEABLE: LED chest lamps come with a micro USB charging cable and take about 5 hours to charge. Suitable for outdoor cycling, camping, hiking, etc. Specification Item Type: Chest Running Light Material: ABS Switch: Press Switch Battery Type: 18650 Battery Battery Capacity: 2200MAH (Shipped With Built In Battery) Charging Method: Micro USB Charging Zoom Mode: Fixed Focus Waterproof Rating: IPX4 Luminous Flux: 400-500LM Range: Approx. 50-100m / 164.0-328.1ft Features: Triangle Strap, Do Not Worry About Falling During The Run, Behind The Battery Compartment Backpack With LED Warning Lights, Headlights Can Be Adjusted Up And Down Angle Package List 1 x Chest Running Light 1 x Charging Cable