Product Description Material: ABS Size: 50 * 62 * 21 mm Brightness: 100 lumens Battery: 1000 mAh lithium ion battery Sensing distance: 25 cm Continuous lighting time: 6-12 H Color: black, blue Quantity: 1 piece Package content: 1 piece * headlight 1. Hands-Free Cap Light: Part of your hand to control the lamp. Dual sensors, more sensitive recognition gesture. 2. High performance with low weight: 100 lumens maximum output, ultra-light weight, no strain when putting on your hat. 3. Easy to use: With its easily accessible power switch and the small footprint, the cap can be attached to the edge of most caps with a visor or hard hat in seconds or can also be used as a flashlight. 4. Waterproof and Multifunctional: Can be attached to the edge of a cap and is super easy to install and use. Waterproof and designed for extreme conditions and rough use. Ideal for cycling, hiking, camping, climbing, fishing and other outdoor activities. 5. USB rechargeable headlamp: The headlamp has a built-in lithium-ion battery with 1000 mAh. The charging time is only 3 hours. It can be used for up to 6-12 hours.