For a technical consumer who expects all-around performance and features out of their headlamp but still values a small size and compact package. This user has access to a power source and values the ability to go out on their mission with a fully charged battery. Rechargeable: Powered with integrated 1500 mAh Li-ion battery with micro-USB charge port 400 Lumen max output Recycled elastic headband featuring comfortable next to skin Repreve fiber construction IP67: Waterproof-Tested to operate at least 1.0 meters underwater for 30 minutes Tech Specs Display Weight73 g Max Distance(High) 100 m, (Medium) 60 m, (Low) 12 m Size RangeALL