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• BAK4 prisms for increased contrast and resolution ensures sharp, true-to-life color of observed subjects.18mm bright BAK4 prism lens fully take advantage of 50mm fully multi-coated objective lens, collect more lights, and deliver brighter view. 22mm large FMC green film eyepieces offer a wide field of view.
• Dry nitrogen-filled and O-ring sealed IPX7 waterproof binoculars can be in water for 30 minutes under 1.5 meters depth.Rubber armor provide enhanced waterproof and fogproof performance in extreme weather conditions.Bird-watching binoculars for adults, men, women and kids,that are more compact and lightweight.