Features:Collapsible monocular extends to 12.8 inches and retracts to 5.3 inches.Powerful 25x magnification and 30mm objective lens diameter.Blue-coated optics provide crisp clear images.Durable aluminum construction with brass finish and comfortable leather cover.Comes in a leather bag for easy storage and carrying.Great gift for those who love traveling, bird watching, and telescope collection, etc. YB10746