The Optelec 2.5X PowerScope Hand-Held Monocular Telescope is a compact and lightweight, achromatic mini monocular telescope with a smooth adjustable focusing barrel. The Galilean monocular is mounted with a metal ring to attach finger rings and other accessories. Due to the new design of the optics, the monocular telescope can be used for both distance and near focus viewing. The PowerScope Clip-On Monocular includes a protective case and detachable neck strap and comes with an Optelec Limited Lifetime Warranty.