Brand new, never used.Adasion 12x42 HD Binoculars for Adults with Universal Phone Adapter - Super Bright Binoculars with Large View- Lightweight Waterproof Binoculars for Bird Watching Hunting stargazing Hiking Sports18mm Large Eyepiece Binoculars, Larger Image, Clearer Details2.25 times the image size of 12mm eyepiece (e.g. 10x25, 12x25, 10x21 binoculars), 1.28 times of 16mm eyepiece (e.g. Ordinary 10x42, 12x42 binoculars). Large eyepiece binoculars make full use of 12x magnification, deliver larger image, ensure clearer details16.5mm Big BaK4 Prism HD Binoculars, Super Bright, Crisp ViewCollect 32% more light than 12.5mm prism lens (e.g. 10x25, 12x25, 10x21 binoculars), 13.7% of 14.5mm prism lens (e.g. Ordinary 10x42, 12x42 binoculars). 16.5mm Prism lens take 100% advantage of 42mm objective lens, collect more lights, deliver brighter view.