aomekie marine binoculars for adults 10x50 waterproof binoculars with rangefinder compass bak4 prism fmc lens for birdwatching hunting boating aomekie <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>