Bushnell AR Optics 1-8x24mm Rifle Scope - Illum. BTR-1 - This 1-8x24mm riflescope features Bushnell's illuminated BDC reticle for fast and accurate target acquisition. To speed up switching between magnification we've given you two Throw Down Power Change Levers (PCL) of different length. The 6 mil per revolution turrets are capped to protect them from bumps and hard use. It utilizes a 30mm main tube, illumination is provided via CR2032 battery, and it's IPX7 waterproof. Illuminated BDC reticle Throw Down Power Change Lever, 2 lengths Capped turrets to protect against hard use Features IPX7 Waterproof construction - O-ring sealed optics stay dry inside, when immersed in three feet of water for up to 30 minutes. Fully Multi Coated Optics - Multiple layers of coatings on all lens surfaces increase light transmission and image brightness. What's in the box: 1-8x24 riflescope; scope covers; short throw lever; long throw lever; Spudz(TM) lens cloth; multitool; instruction sheet; Quick Start Guide.