Description:1. Adjustable: This kind of headlamp has 4 lighting modes, and it supports telescopic Zoomable, you can adjust the lamp angle 90 degrees.2. Rechargeable: This headlight is designed with 2x build-in batteries, cordless and long-lasting, you do not need to charge it frequently.3. Portable: This head lamp has a headband, wearable and hands-free, it will not occupy so much space in your backpack when not in use.4. Occasion: Suitable for camping, hiking, fishing, repairing, cycling and other outdoor activities, this headlamp is a good supply for outdoors.5. Reliable: This kind of head lamp is made of aluminum alloy, waterproof and sturdy, it can be used for a long time. Specification:Material: Aluminum alloySize:5.8CM/2.28inch.Light Diameter: approx. 4CM/1.57inchBattery: build-in 2x rechargeable batteriesWaterproof: IPX4Lumen: Type 1: 800-1000lm, type 2: 1500-1800lm Note:1. There might be a few color distortions due to different computer resolutions.2. There might be a slight error due to different hand measurements.