Please notice when using: 1. Forbbiden to clean the inner parts of the monocular or disassenbly the monocular. 2. Caution: Do not allow using the monnocular to watch the sun directly! Use the monocular to watch the sun will causing incurable injure to human eyes. 3. If you like to attach monocular to smartphone, you need to buy a holder like this: http:\/\/www.banggood.com\/Universal-Telescope-Camera-Lens-Holder-Connecting-0-6-Inch-Phone-And-22-48mm-Eyepiece-p-1044766.html More Details: Features: 1. It is portable to carry out. 2. It is suitable for distant shot. Make it easy to take some beautiful pictures. 3. You also can make videos for distand view. Never worry about that you can't see the singer when go to a concert. 4. Never miss every beautiful and unforgettable scene. It is worth to buy! Specifications: General Specification Model Number 16X52 Color Black Type Monocular Product Weight (kg) 0.252kg Dimensions (cm\/ inch) 15*5.5*5.5cm Technical Parameters Magnification 16X Objective Lens Diameter 52mm Prism System The roof system Focus System Eyepiece system Waterproof Level Life waterproof Eye Cup Type Rotating around Package Included: 1 X Telescope Monocular 1 X Pouch 1 X Strap Buckle 1 X Clear cloth