Compact, ultra-powerful and rechargeable headlamp with REACTIVE LIGHTING® technology. 900 lumen max output, 100g weight and IPX4 weather-resistance. 3 reactive light levels: 100 lumen (35m, 10hr), 300 lumen (55m, 5hr), 900 lumen (150m, 2hr). 3 standard light levels: 10 lumen (12m, 100hr), 200 lumen (55m, 5hr), 550 lumen (110m, 2hr).