LED: XML- U2 Lens: Anti-reflection toughened optical glass lens, scratch resistant Reflector : High efficiency orange peel reflector, excellent throw and side spill Modes: 3-level adjustable brightness, flashing and over-heat protection functions Output levels: Max: 1000 lumens Medium: 580 lumens Low: 260 lumens Runtime: (with Lumintrail 5.2Ah battery pack) Max: Nearly 4 hours Medium: 8 hours Low : 14 hours Flash: 10.5 hours. Power indicator: 3-color/4-modes LED indicator to display battery capacity Battery capacity/Voltage: Lumintrail 5.2 Ah, 8.4V (4X18650 Li-ion battery pack, waterproof designed) Charge time: 4 hours (Lumintrail 5.2Ah battery pack) Charger: 110 Volt to 240 Volt Shell material: 6061-T6 Aluminum alloy Surface treatment: Premium Type III hard-anodized anti-abrasive finish Waterproof grade: IPVI Weight : 130G without battery pack, 370G with battery pack Package Includes: light head, battery pack, charger, helmet mount, extension cable, O-rings.