Front light with one CREE XM-L LED with a luminance of up to 1000 lumens has 6 features -25% power (8h), 50% power (4h) 100% power (2h) Slow ashing 25% power (16h), slow ashing 100% power (4h), rapid ashing 50% power (4h). Built-in Li-Ion battery (3. 7V 2600mAh) rechargeable through USB port using the included cable, charging takes about 4h. The charging, full charge and battery status is indicated by LED light on the body. The light is waterproof IP44. Easy to assemble without tools. Weight 132 g.