Simply put, the Impact rangefinder's combination of excellent and reliable performance at a super economical price means you no longer have an excuse to head afield without a laser rangefinder. This lightweight, nofrills rangefinder is easytouse and features angle compensation for treestand hunters and casual range goers wanting precise horizontal distance to the target. The Impact joins all other Vortex rangefinders in the unique fact they are fully covered for life by the legendary VIP Warrantyincluding electronics.Runs on a single, longlasting, easytofind, CR2 battery. Included in the Box Lens cloth Strap Soft carry case CR2 battery OPTICAL FEATURES Fully MultiCoated: Increase light transmission with multiple antireflective coatings on all airtoglass surfaces. CONSTRUCTION FEATURES Waterproof: Oring seals prevent moisture, dust and debris from penetrating for reliable performance in all environments. Rugged Design: Built to handle tough situations. Compact and lightweight. Diopter: Adjusts for differences in a user's eyes. Located on right eyepiece. PERFORMANCE FEATURES Intuitive Display: Easytouse menu with a simple, clean display. HCD: Horizontal Component Distance (HCD) mode for angle compensated ranging. LOS: Line of Sight (LOS) mode displays actual line of sight range. Scan: This feature displays continual distance readings when panning across a landscape or tracking a moving animal. Ranging Format: Range in yards or meters.