Celestron's compact Outland binoculars were designed to meet the needs of every outdoor enthusiast, from birders and hunters to sports fans to travelers. The optics are multi-coated for high resolution and high contrast views. The prisms are made of BaK-4 glass, which provide enhanced color fidelity. Dimensions: 116mm x 110mm x 43mm Magnification: 10x Objective Lens Diameter: 25mm