25-75x zoom;SV28 spotting scope is easy to focus and change magnification;easily set up when looking at birds and scenery;A great spotting scope for beginner to novice 70mm large object lens;More powerful light gathering ability;70mm tube allows plenty of light and decent view of the target once set;extendable sunshade built onto the main barrel to reduce glare IP65 waterproof;Can avoid sudden environmental changes to damage the SV28 spotting scope;The finish is made of a seamless Non-Slip material so it doesn't feel like it would slip out of your hands if wet