Wulf Optics FIIR LED 850NM IR 50mm Illuminator Black. The WULF Fi IR 850nm illuminator offers an exceptionally clear image and a slightly extended range when compared to its more covert 940nm counterpart. Both units will offer a pure image to your night vision rifle scope or observation system. The WULF Fi IR 50mm boasts a 50mm focusable head enabling you to switch between a spot beam for extended distances or a wide-ranging beam allowing you cover wider open fields at shorter distances. This IR illuminator pairs seamlessly with a range of models including the HikMicro Alpex and the brand new HikMicro Alpex 4K Pulsar C50 Pard NV008S Sytong HT60 Pard DS35 and Arken Zulus. Specifications for Wulf Optics FIIR LED 850NM IR 50mm Illuminator: Manufacturer: Wulf Optics Color: Black Battery Type: Lithium Ion Weight: 270 g Dimensions: 150x55x55 mm Features of Wulf Optics FIIR LED 850NM IR 50mm Illuminator Clean LED beam Simple to use at night thanks to a single mode operation - switching between flood and spot will lower intensity) Ability to switch between a spot or flood beam thanks to a focusable head Package Contents: Wulf Optics FIIR LED 850NM IR 50mm Illuminator 1x 2600mah 18650 battery 1x 18650 USB single charger Wulf Optics WU4006: FIIR LED 850NM IR 50mm Illuminator Black