Celestron Regal LX 10x42 Waterproof Binoculars Multi-coated and phase coated optics for a clear view Waterproof nitrogen-filled and sealed body Aspheric eyepiece lens for pinpoint images across the entire field of view (FOV) Super-high reflectivity coating on the prism surface for brighter images, day or night Continuous spectrum, high-transmission lens coating ensures natural color balance