GENTOS Headlight HW-K634H Can be used with both rechargeable batteries and dry-cell batteries, so it can be used immediately even for sudden tasks. With a single charge, it can run for 11 consecutive hours at the brightest setting of 800 lumens. In Eco mode, it boasts an incredible 96 hours of continuous operation. 【Specifications】 Light Source: High-intensity chip-type white LED x 1 Brightness (approx.): 800 lumens (High mode) / 400 lumens (Mid mode) / 40 lumens (Eco mode) Luminous Intensity (approx.): 8140 candela (High mode) / 4281 candela (Mid mode) / 410 candela (Eco mode) Power Source: Dedicated lithium-ion rechargeable battery 3.6V 6,400mAh 23.04Wh or AA alkaline batteries x 4 Charging Time (approx.): 8 hours Battery Life: Approximately 300 charge/discharge cycles Eneloop compatible Operating Time (approx.): 【Head Unit】11 hours (High mode) / 26 hours (Mid mode) / 96 hours (Eco mode), 【Rear Recognition Light】200 hours (continuous) / 400 hours (flashing) Beam Pattern: Focus Control Beam Distance (approx.): 180m (maximum) Protection Rating: Dustproof and splashproof (IP64 compliant) Drop Resistance: 1m drop durability Body Size (approx.): 【Head Unit】W80.0 x H57.2 x D44.0mm, 【Battery Box Unit】W90.0 x H74.5 x D45.1mm Body Weight (approx.): 353g (including batteries) Accessories: Headband with non-slip, Silicone band (4 buckles), Helmet holder x 4, USB Type-C cable (50cm), Dedicated rechargeable battery Brightness (lumens): 500-999lm Type: LED light Type: COB light Features: Rechargeable