Field of View : or Eyepiece diameter : 41 or 43mmWater Resistance Level : IPX4Objective Lens Diameter : 42 or 50mmMagnification : 8-10xModel Number : Binoculars lens capType : BinocularsOrigin : Mainland ChinaMaterial : Rubberfeature1 : Eyepiece lens coverfeature2 : Objective lens cover42mm suitable for : 8x42 or 10x42 or 12x4250mm suitable for : 7x50 or 10x50 or 12x50 or 20x50Specifications- Color: Black.- Material: Rubber.- 42mm binoculars cover-eyepiece inner diameter41mm, objective lens inner diameter52mm 50mm binoculars cover-eyepiece inner diameter43mm, objective lens inner diameter60mm- Note:Cover is made of rubber and has a little elasticity. It can be used with a diameter greater than or less than 1 mm- proof, waterproof and scratch- proof, provide extra protection for your.- Made with high- grade and safe rubber material, rest assured to use, useful and reliable.- This objective lens caps are very easy to install and simple to operate, giving you huge convenience.- Exquisite workmanship, reasonable structure, professional and practical, excellent and.- design and in fine craftsmanship. the best replacement for your old, broken one.