Product Features 2,000 lumens Uses one (1) Streamlight SL-B50 protected Li-Ion USB-rechargeable battery pack One-handed operation of momentary, variable intensity, or strobe mode TEN-TAP programming allows for selection of three different operating programs Product Specifications High Lumens: 2,000 Run Time on High: 2.50 hours Run Time on Low: 25.00 hours Beam Distance: 262 meters Max Candela1: 7,300 Battery Type: Streamlight SL-B50 Protected Li-Ion USB Rechargeable Battery Pack Battery Quantity: 1 Length: 6.10 inches (15.49 centimeters) Weight: 8.25 ounces (233.88 grams) Colors: Black