“Travel Essentials Optics Diamondback HD 10×42 waterproof IP76 high performance telescope Binoculars – HD Optical System, Non-slip Grip, Waterproof, Fogproof, Shockproof, Included GlassPak – Unlimited, Unconditional Warranty. Magnification (x) 10x eyepiece diametre 22.5mm, objective lens diametre:42mm field of view angle:5.6 degrees,field of view range: 98m/1000m 294ft/100yards, exit pupil distance:15mm, exit pupil diametre:4.2mm, closest. FOcal lenght: 5m/16.40ft, prism specification: 16.5mm diopter adjustment.” has been added to your cart. View cart