A High-Performance Lightweight Headlamp with only 2.1 oz and 600 Lumens Lighting Mode: Mixed light/Spot light/Flood light/Red light LED Chip: Luminus SST-20 Lamp Bead Maximum Luminous Flux: 600 Lumens Maximum Runtime: 50H (Flood light 5 Lumens) Battery Capacity: 2.4Wh / 3.3Wh Dimensions ( Excluding Headband): 2.95*1.54*1.14 inch(75*39*29mm ) Full Weight (including Battery + Headband + Headlamp): 2.1 oz (59.5g) Adjustable irradiation angle: 60 degrees Waterproof Level: IP67 Charging method: Type C