You may be confused by all the many different types of binoculars on the market today. You can go thought shelf after shelf of them and still not be sure what they are and what they do. You may want to narrow the choice down to the products that are from the Leupold Company. There are many products available including the 10×42 Cascade. These are considered to be one of the best operating binoculars for outside use to be able to see flying birds in the sky. This particular product has a roof prism and will give you the bright light and sharp image you want. This Leupold binoculars is very light and will not be a bother for you to carry. The price ranges in about the $400.