1. High-definition vision binoculars: large BAK-4 prism and 50mm full multilayer coating, green objective lens has the smallest light reflection and distortion. High light transmittance can reach 99.5%. Multilayer optics ensure excellent light transmittance and brightness. 2. IPX7 waterproof rangefinder binoculars completely sealed with nitrogen; waterproof binoculars and pontoon telescopes, suitable for marine, boating, water game, fishing, etc. 3. The 7×50 rangefinder binoculars have a large 25mm eyepiece; the wide-angle binoculars are suitable for long-term viewing, making your eyes more suitable for marine and birding. 4. Durable rubber armored 7×50 porro binoculars ensures a secure hold and impact resistance. This 7×50 porro 10×50 binoculars has passed 1.5 meters drop test. And the rubber protects the lenses when not use. 5. The 7×50 rangfinder 10×50 binoculars have a light switch to help you illuminate the surveillance compass when using the binoculars at night. 6. SECOZOOM waterproof 10×50 binoculars with rangefinder and compass: binoculars with compass; binoculars with rangefinder can measure distance and object size.
