<p>The 10x50 binoculars are a floating model with illuminated compass.<br> They have two ranging tools.The eyepiece Mils Reticle Scale and the Calculator Dial can be used to estimate your distance from an object if its size is known,or vice versa.<br>The optics are precision crafted for brightness and clarity of image.<br> Non-slip and ergonomic rubber design offer a secure grip and heavy-duty rubber armor provides great shock resistance.</p> <p><b>Product Feature</b><br><br> Magnification:10x<br> Field of view at 10x:(132m/1000m)<br> Angle of vision:7.5 Degree<br> Exit pupil diameter:6.8mm<br> Exit pupil distance:22mm(Long eye relief for eyeglass wearers)<br> Focus:individual eye focus(Diopter control)<br> Diopter adjusting range:-5~+5 DIOPTER<br> Interpupilary distance:56-72mm<br> Prism type:Porro BAK-4<br> Lens coating:Multi-coated<br> Housing:Rubber<br> Waterproof<br> Fog proof<br> Rangefinder reticle<br> Compass</p> <p><b>Package Includes:</b> <br><br> 1 x Military binoculars <br> 1 x Military carrying bag <br> 1 x Lens Cloth <br> 1 x Lanyard<br><br> <b>Notes: 2pcs button batteries are required, included in the package (the battery model is LR936/AG9,cell battery)</b></p>