Rechargeable Powered by single 18650 battery, rechargeable by USB, the hidden micro USB port can support various charging method, such as power bank, adapter. Removable The headlamp is detachable, easy to carry, you can slip it into your pocket. Adjustable The nylon headband is fully adjustable, you can adjust the headband according to your height. 6 lighting modes High light / Low light / Gradual dimming / Strobe (press twice quickly) / SOS (press twice quickly) / Slow strobe (press twice quickly). Specification: Light Color: White LED bulbs: CREE XML-L2 Brightness: 1200 lumens Head rotation: 180 degree Material: aluminum alloy Net weight: 118g (including battery) Headlamp dimensions: 8.5 x 2.5 x 3.6 cm Waterproof: IPX-6 Daily Waterproof, Rain protection Power Supply: 1 * 18650 Battery (included) LED Model: High / Low / Continuous / Strobe / SOS / Slow Strobe Dimming The package includes: 1 x Rechargeable and removable LED headlamp 1 x 18650 battery 1 x USB cable