"The Bushnell NatureView 10x42 Binocular has a lead-free optical path that is fully multicoated for enhanced contrast and image clarity. This model of the NatureView series binocular uses a roof prism design, which enables a more streamlined form factor compared to Porro prism designs. The binocular weighs less than 1.5lbs and features a rubber-armored weather-sealed housing, making it well-suited for day hikes and other recreational activities. Twist-up eyecups and 15mm eye relief permit a comfortable viewing distance even while wearing eyeglasses. A 62deg. apparent viewing angle provides immersive views, making the NatureView 10x42 a well-equipped binocular for almost any mid-range observation.|Center focus wheel with ergonomic texture and ridges|Twist-up eyecups for comfortable eye relief|1/4""-20 threaded mount for tripod adapter"