The celestron upclose g2 porro binocular 10 30x50 is a high quality but economically priced binocular perfect for bird watching sporting events concerts travelling and studying nature and wildlife they have multi coated optics which increase light transmission resulting in brighter and sharper images with high contrast levels their stylish rubber covered aluminum body protects from rough handling and they have ergonomic thumb indents and finger ridges for extra non slip comfort and ease