Contrast and Resolution Images: All glass end optics with BAK4 prism and multi layer green film. This design increases light transmission and brightness to produce clear, colorful images. Widely Compatible with Smartphones: Fits most smartphones on the market. Easy to install and use. 840X40 Magnification: Provides 840x magnification with a 40 mm objective lens. This range offers a clear view up to about 1000 yards, supporting enjoyable viewing during travel and for bird watching. Easy to Use: Singlehanded operation with simple adjustments. Set the eye cup and focus wheel until the image is clear and bright. The smartphone holder and extendable stable tripod help you capture HD images or videos with ease. Use scenarios Travel and sightseeing: Ideal for distant landscapes, landmarks, and scenic viewpoints on outdoor trips. Bird watching and wildlife observation: Clear magnification and bright optics enable closer, more detailed viewing of birds and animals. Sharing moments: Use the smartphone holder and tripod to take photos or videos and share them with others during outings or at events.