Orion 10x42 Waterproof Monocular (Black) Compact and portable monocular perfect for hand-held scanning and magnified study of distant birds, wildlife, and scenery Waterproof rubber-armored construction for viewing in virtually any weather - but submersion or scuba diving is not recommended! Conveniently compact at just 6.1-Inches long, and lightweight at just 11 ounces Fully multi-coated 42mm diameter optics with anti-reflection coatings ensure maximum light throughput and bright, clear views Amazing close focus of just 20-Inches - view even up-close birds and objects with 10x power magnification