Specification: Type: Refractor Aperture: 80mm (3. 15") Focal Length: 400mm (15. 75”) Mount: AZ Altazimuth Mount Eyepiece: K25mm: 16X ; K10mm: 40X; K5mm: 80X Finderscope: 6*30 Zenith Mirrors: 48°Erecting BAK4 prism Tripod: stainless steel Tripod (adjustable) Barlow lens: 3X Package Content: 1 x Telescope Optical Tube 1 x stainless steel Tripod 3 x Eyepiece ( 25mm & 10mm & 5mm ) 1 x 6*30 Finderscope 1 x Finderscope base 1 x Zenith Mirrors 1 x Barlow lens 3X 1 x Accessory Tray 1x Phone Attachment And Blutooth Remote Warning! Warm Tips: If it shows a blurred picture, please adjust focus using focus wheel. When observing an outdoor target with an astronomical telescope indoors, do not close the window to avoid the deformation of the image caused by the reflection of the window glass. Use a telescope outdoors, please wait for the temperature of the product is the same as the outdoor temperature, the performance will be better. Avoid accidentally taking the telescope into a larger temperature difference environment because the moisture in the air will condense on the objective. NEVER aim your telescope at the sun or even close to the sun!