Features: - perfect for the driving range or out on the golf course! - precise, accurate & reliable - smart digital interface display readout - helps to improve your golf game & depth perception - (2) selectable modes: pin-seeking & distance measuring - magnification Zoom sight - simple button control operation - comport & portable handheld design - battery operated wireless performance - adjustable manual focus eyepiece lens what's in the box: - rangefinder - storage/ travel case - battery technical specs: - measuring range: 5.4 - 437.0 yd. - selectable units of measure: meters/ yd. - optical objective lens: 21mm - magnification: 6x - field of view: 7.5 Degree - diopter adjust range: +/-4 - accuracy: +/- 0.2% yd., +/- 1Meter - battery operated: requires (1) x 'CR2' (lithium, 3V), included - dimensions: 4.2'' x 2.8'' x 1.6''"