Streamlight ProTac 2.0 LED Headlamp Black. 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. Specifications for Streamlight ProTac 2.0 110-2000 Lumens LED Headlamp: Manufacturer: Streamlight Beam Color: White Light Output: 110 - 2000 lumens Battery Type: Lithium Ion Bulb Type: LED Fabric/Material: Aluminum Weight: 10.4 oz Battery Life: 2.5 - 25 hours Beam Distance: 55 - 241 m Condition: New Water Resistance Level: Water Resistant Weather Resistance: Yes Water Resistant Mark: 2 m Finish: Anodized Length: 4.92 in Features of Streamlight ProTac 2.0 2000 Lumens LED Headlamp 2000 lumens Uses one (1) Streamlight SL-B50 protected Li-Ion USB rechargeable battery One-handed momentary/constant on operation TEN-TAP programming allows for selection of three different operating programs Package Contents: Streamlight ProTac 2.0 2000 Lumens LED Headlamp Streamlight 89001: ProTac 2.0 LED Headlamp Black