The ProTac® 2.0 Rail Mount HP offers the perfect blend of power at 2000 lumens and 85000 candela. It features a tail cap switch for momentary or constant on operation and a port for an optional remote pressure switch. Powered by our SL-B50® battery pack that charges charges using a USB-C cord outside of the light or inside – no need to remove from your weapon. – Uses (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: 2000 lumens; 85000 candela; 583m beam; runs 2.5 hours – Low: 250 lumens; 11500 candela; 214m beam; runs 11 hours – Strobe for signaling or disorienting: runs 4.5 hours – IP67-rated; dust-tight and waterproof to 1 meter for 30 minutes – 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 remote retaining clips double-sided tape zip ties and M-LOK® mount) – Length: 6.30 in (16.0 cm) – Weight: 9.06 oz (257g) with (1) SL-B50® battery pack – Limited lifetime warranty – High Lumens 2000 – Run Time on High 2.50 hours – Run Time on Low 11.00 hours – Beam Distance 583 meters – Max Candela 85000 – Battery Type SL-B50 Rechargeable Battery Pack – Battery Quantity 1 – Length 6.30 inches (16.00 centimeters) – Weight 9.06 ounces (256.85 grams) – Colors Black