The ATN IR940 Covert Long Range IR Illuminator provides a more covert experience when you want to stay hidden from your prey. Animals and people are not able to see the red glow when looking at the illuminator, even at the light source. Providing a more covert experience with IR sensitive targets and when being concealed is of utmost importance. FeaturesLens: Aspherical glassMaterial: Constructed using aircraft grade aluminiumSurface: Type III hard anodized with highly durable finishWaterproof: IPX-8Battery type: 18650 rechargeable 3.7 V Lithium ionDimensions: 1.9"A-1.9"A-5.9" / 48A-48A-150 mmWeight: 0.41 lb / 186 g