Telescope/astronomical telescope suitable for indoor and outdoor If it has not been used for a long time, keep it in a dry place. Even if it is waterproof, store your telescope in a dry place. It can resist light water, but it can't be used in heavy rain for a long time or soaked in water. Wipe the lens with a clean, dry cloth. If you have some stubborn stains, use a cloth to rub some alcohol. It is easy to remove. Specifications: Magnification: 10 times. Caliber: 42mm Prism material: BAK-7prisms Field of view: 5.37 degreen Exit pupil distance: 18mm Objective lens coating: multilayer coating Waterproof level: waterproof life Lenses: All optical lenses Dimensions: 163 * 53mm Packing list: Telescope * 1 Box * 1 Instructions * 1 Warranty Card * 1 Lens cleaning cloth * 1 Phone Holder And Tripod*1