The Burris Thermal Scopes are packed with features that will help you take night hunting to a whole new level! Offering 4 power zoom, hot track, stadiametric ranging and 5 unique color palettes.7 color palettesStadiametric ranging10 reticle optionsHot trackManual and auto NUCAdjustable contrastAdjustable brightness Intuitive, one-hand operationIP673.3-13.2x magnification, 50mm ObjectiveTorque Specifications: 60 in-lbsBattery InformationRuns on 18650 Lithium-ion batteries, but will accept (2x) CR123AsAcceptable length for batteries is 65-68mmAvoid batteries with a protection circuit as they are typically longer than 68mm.Recommend 3400mAh for max runtime