This auction is for a gently used Datascope.  Comes with what you see in the photos.  In Mint condition.  Specifications below.
The KVH DataScope combines a 5x30 monocular, a digital compass, an electronic rangefinder, and a chronometer in one handheld unit, making it the most versatile navigational instrument available today. Ideal for sailors, boaters, hikers, hunters, and other outdoor enthusiasts, the DataScope accurately computes the range and bearing to an object with just the push of a button. And since the information is superimposed on the scope's field of view, you never need to take your eyes off of the target! Lightweight, waterproof, and small enough to fit in a shirt pocket, the DataScope puts precision navigation into the palm of your hand. Highlights: Highest-quality optics and permanent focus design Internally gimballed to help maintain 0.5º accuracy Calculates the range to any object and stores nine separate bearings with their associated times Illuminated for nighttime viewing Compact, one-handed unit is completely waterproof with rubber buttons and grips Technical Specifications Monocular Specifications Monocular Type: Roof Prism Magnification: 5X Objective Lens: 30 mm Fully Coated Optics: Yes Fogproof: Yes (gas filled, hermetically sealed) Focus: Permanent (adjustable for vision) Field of View: 9° (472 ft. at 1000 yds. (156 m. at 1000 m.)) Exit Pupil: 6 mm Reticle: Electronic Compass Specifications Compass Type: Digital Fluxgate Gimballing: ± 20° Accuracy: ± 0.5° Resolution: 0.1° Calibration: Automatic True North Display: Yes (user enters variation) Bearing Display: 3 modes: instantaneous/average/continuous Bearing Memories: 9 Change in Bearing: Calculated automatically Units: Degree or mils (user selectable) Rangefinder Specifications Rangefinder Type: Electronic Ratiometric Rangefinder (patented) Scale: 32 step electronic analog scale Units: User determined (metric, English, or any other) Chronometer Specifications Clock Type: Quartz crystal real-time clock Time Readout: 12 or 24 Hour (user-selectable) Time Memories: 9 recorded in conjunction with bearings Changes in Time: Calculated automatically between bearings General Specifications Dimensions: 4.5"(l) x 1.7"(w) x 2.4"(h) [11.4 cm x 4.3 cm x 6.1 cm] Weight: 11.5 ounces (327 grams) Environment: Totally waterproof, fogproof, shock resistant Temp. Range: Operating/Storage: -20°C to 70°C Power: 3-Duracell DL2025 3V lithium batteries (or equiv.) Power Consump.: Sleep Mode: 0.02 mA Display Mode: 0.7 mA Battery Life: 6 months to 1 year (depending on usage) Low Battery: Automatic Indicator