Barr & Stroud Series 5 WP 10X42 FMC Binocular is superb for bird watching, nature observing, wild life, sports events and hunting. This binocular incorporated high performance phase corrected roof prisms that produce sharp images with extra high resolution and high quality Extra-low Dispersion glass to control over chromatic aberration and produce clear high definition field of view. The fully multi-coated optics with anti-glare properties improves light intensity and clear image with high contrast. The large size objective lens of 42mm increases light transmission and offers viewing even in low light conditions. Its body is constructed with magnesium to decrease overall weight and increase its life. The Hydro Guard coating runs off any water coming from the surface of objective lens. This binocular is waterproof and submersible to 1.5m for up to three minutes, and nitrogen filled for keeping fog proof. Its 15.2mm long eye relief and high eye-point design provides a clear comfortable field of view for users with or without wearing glasses. It had 58-73mm interpupillary adjustment to correct eye points comfortably.