STREAM PROTAC 2.0 SYSTEM The high-performance ProTac 2.0 Rail Mount produces 2,000 lumens without sacrificing run time. Powered by the new SL-B50 battery pack that charges inside or outside of the light using a USB-C cord no need to remove from your weapon. Uses one (1) Streamlight SL-B50 protected Li-Ion USB-rechargeable battery pack (included) Features TEN-TAP programming Choice of three user selectable programs: 1) high/strobe 2) high only 3) low/high High: 2,000 lumens; 266 m beam; runs 2.5 hours Low: 250 lumens; 93 m beam; runs 11 hours Strobe for signaling or disorienting: runs 4.5 hours IP67-rated; dust-tight and waterproof to 2 meters; 2-meter impact resistance tested 6000 series machined aircraft aluminum with Type II MIL-Spec anodized finish Mounts directly to guns with MIL-STD-1913 (Picatinny) rails Available as "light-only" or "system" (system includes remote pressure switch) 6.30 in (16.0 cm) 9.06 oz (257 g) with one (1) SL-B50 battery pack Available in black Limited Lifetime Warranty Product Specifications High Lumens: 2,000 Run Time on High: 2.50 hours Run Time on Low: 11.00 hours Beam Distance: 266 meters Max Candela: 17,700 Battery Type: Streamlight SL-B50 Protected Li-Ion USB Rechargeable Battery Pack Battery Quantity: 1 Length: 6.30 inches (16.00 centimeters) Weight: 9.06 ounces (256.85 grams) Color: Black