Celestron 52305 Regal M2 80ED Spotting Scope ED Objective Lens: Minimizes chromatic aberration, accurate color reproduction, increased resolution and contrast. XLT Coatings (Fully Multi-Coated Optics) 20-60x Zoom Eyepiece and Standard 1.25" Eyepiece. Close Focus-21.3 ft (6.5 m) at 20x with included eyepiece. Focal Length-480 mm (18.9 inch) Magnesium Alloy Body: This material is strong and durable, but lighter weight than traditional aluminum alloy housings Rotating tripod mount with detents: Place the orientation of the eyepiece in the best viewing position for application