Type : Binoculars Prism : BAK4 Objective lens diameter : 36mm Eyepiece Diameter: 20mm Magnification:10x Focusing : Eyepiece double adjustment Minimum focusing distance : 5.0m Coating : FMC Broadband coating Color : Black Exit Pupil Diameter: 3.75mm Exit Pupil Distance : 13.1mm Waterproof : Living Waterproof Material : Metal lens barrel + rubber protective leather Low Night Vision :It can be used under low light level, but it can't be used without light Angle : 8.5 degree feature: Small, lightweight and portable design Focus with one hand HD, high light transmittance Support mobile phone shooting Applications: boating/yaqing, sports, bird watching, racing, horse racing, hunting, beach, travel caveat: 1. Do not try to clean the inside of the telescope or try to remove the telescope. 2. Do not use the telescope to observe the sun directly, otherwise it will cause permanent damage to the eyes