【High Power Binoculars】- The HD Binoculars is coated with FMC Broadband coating and it is equited with premium BAK4 prism, which ensures imaging verisimilar and acumination. BAK4 has better performance such as higher light refractive index than traditional BAK7. The full-coated FMC lens contribute to high definition visions.Binoculars for Adults with adjustable eye cups, Suitable for people who don't wear glasses,Also suitable for glasses wearers.