The high-performance ProTac 2.0 Headlamp produces 2000 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. - 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/medium/low 2) high only 3) low/high - High: 2000 lumens; 241 m beam; runs 2.25 hours - Medium: 650 lumens; 130 m beam; runs 4.5 hours - Low: 110 lumens; 55 m beam; runs 25 hours - IP64-rated; dust-tight and water-resistant to 2 meters; 2-meter impact resistance tested - 6000 series machined aircraft aluminum with Type II MIL-Spec anodized finish - 4.92 in (12.5 cm) - 10.48 oz (297 g) with one (1) SL-B50 battery - Includes USB-C cord and rubber and elastic headstraps - Available in black - Limited lifetime warranty - Product Specifications - High Lumens: 2000 - Run Time on High: 2.25 hours - Run Time on Low: 25.00 hours - Beam Distance: 241 meters - Max Candela: 14500 - Battery Type: Streamlight SL-B50 Protected Li-Ion USB Rechargeable Battery Pack - Battery Quantity: 1 - Length: 4.92 inches (12.50 centimeters) - Weight: 10.48 ounces (297.10 grams) - Color: Black