The BWJ2322 8x42mm ultra wide angle waterproof binocular is specially designed with the bird watcher in mind. With extra wide field of view・ close focus・ phase correction coated prism and the BAK4 optical lens to take your bird watching experience to a new level of clarity and brightness.These BAK4 lenses will help you see images that are clearer and sharper to your eyes・ which will take you to another level of breathtaking bird watching. Its 42mm aperture is deliver the brightness and color fidelity you need. Also has 8X magnification・ the ideal magnification to capture the most clear・ bright and steady bird watching images.With IPX7 waterproof grade. Nitrogen purged to be waterproof and fogproof in order to withstand tough weather conditions and rugged environments.It suitable for hunting・ bird watching・ camping・ hiking・ backpacking・ traveling・ concerts・ sporting and any other outdoor adventures.