These Magnacraft 7-21 x 40 Zoom Lens Binoculars are like a vintage Cadillac - just sit back and enjoy the ride. The rubber coated body has a lever that glides from 7 power to 21 power without you ever having to lower the binoculars. Also features rubber eye cups, center wheel focus, raised finger and grooved thumb beds for the firmest grip possible, blue coated lens for glare reduction and detachable neck strap.