Front light with aluminum body, high power XPG R5 LED, with 400 lumens intensity. Light has 6 features -25% power (8h), 50% power (4h) 100% power (2h) Slow ashing 25% power (16h) Slow ashing 100% power (3H), rapid ashing 50% power ( 3h). Built-in Li-Ion battery (3. 7V 1050mAh) rechargeable through USB port using the included USB cable. Charging takes about 3h and a built-in indicator shows the charging, full charge and low battery. The light is waterproof IPX44. Easy to assemble without tools. Weight 79 grams.