These compact binoculars have a variable magnification of 10 to 30 times, which means you can view either the entire stage or just the guitarist. They're small and light, so you can take them everywhere. The 10-30x25 Zoom PC I is suitable for holidays, city trips, festivals, or a walk in the woods. The lenses have a multi-coating that ensures optimum clarity and contrast. The central focus ring makes it easy to focus the binoculars. The rubber eyecups can be kept at a comfortable distance from the eye, even when wearing glasses.