The Streamlight ProTac 2.0 Headlamp delivers amazingly bright, focused lighting without skimping on battery life. Capable of throwing a 2,000-lumen beam up to 241 meters, the ProTac 2.0 operates for up to 2.25 hours on the highest setting-and the SL-B50 battery can be charged without removing it from the Light. Machined from robust 6000 series aluminum, the ProTac 2.0 features a mil-spec Type II anodized finish for superior corrosion resistance and durability. Even better, it's dust-tight and 100% waterproof to 1 meter for 30 minutes-even constant exposure to sweat and moisture won't slow it down. And with 4 modes (high/medium/low/strobe) of operation along with TEN-TAP user-adjustable functions, it's the total tactical package. 2,000-lumen max output SL-B50 rechargeable battery provides 2.25 hours of run time on High Battery can be charged without removing it from the Light High (2,000 lumens)/medium (570 lumens)/low (100 lumens)/strobe functions TEN-TAP programmable switch allows 3 different light programs: 1) high/strobe/low, 2) high only, and 3) low/medium/high 6000 series machined aluminum with Type II mil-spec anodized finish 100% waterproof to 1 meter for 30 minutes 2-meter impact resistance tested Adjustable elastic headband Includes USB-C charging cable Order today!