Product Description Magnification: 7x Objective dia.: 25mm Focusing: eyepiece focusing Prism: Bak 4 Field of view: 140m/1000m Measure theory: semi-conductor laser, no harm to eyes Measure distance: 15-1500m Measure tolerance: +/- 1 m Reading: LCD Size: 60x145x142 mm Weight: 440g Battery: 1x6F22 (9V) Tripod screw: 1/4"