SereneLife?s rangefinder is the next big thing in distance measurement. It has precise, accurate and reliable measuring range between 5.4 - 540 Yards. The laser monocular has adjustable manual focus eyepiece lens too and can magnify 6X. It has 2 selectable modes. First is the Pin-Seeking and second is the distance measuring. It also has a smart digital interface display readout for better readings.Features:Perfect for the Driving Range or Out on the Golf Course!Precise, Accurate & ReliableSmart Digital Interface Display ReadoutHelps to Improve Your Golf Game & Depth Perception(2) Selectable Modes: Pin-Seeking & Distance MeasuringMagnification Zoom SightSimple Button Control OperationComport & Portable Handheld DesignBattery Operated Wireless PerformanceAdjustable Manual Focus Eyepiece LensWhat?s in the Box:RangefinderStorage / Travel CaseBatteryTechnical Specs:Measuring Range: 5.4 - 540 YardsSelectable Units of Measure: Meters / YardsOptical Objective Lens: 21mmMagnification: 6XField of View: 7.5°Diopter Adjust Range: +/-4Accuracy: +/- 0.2% Yards, +/- 1MeterBattery Operated: Requires (1) x ?CR2? (Lithium, 3V), IncludedDimensions: 4.2?? x 2.8?? x 1.6?? -inchesSold as: 1Weight: 0.75 lbs.