Feature 1Lightweight and easy to carry: Perfect for travellers and outdoor enthusiasts who want to capture stunning close-up images without carrying bulky camera equipment. 210-30x zoom magnification: Zoom in and capture details you never thought possible with your smartphone camera. Great for bird-watching, sports events, and nature photography. 3HD lens: Enjoy clear, sharp images with the high-quality HD coated lens. Ideal for capturing stunning landscapes and portraits. 4Full screen without black edge: Say goodbye to annoying black edges on your photos. This telephoto lens provides a full-screen view, giving you a more immersive photography experience. 5Compatible with all types of mobile phones: No need to worry about compatibility issues. This telephoto lens is designed to work seamlessly with all types of mobile phones, making it a must-have accessory for every smartphone photographer Product Introduction Magnification:10-30X Objective diameter50mm Exit pupil distance15.1mm Angular field of view5.6at10x2.730X view130m/1000m Naked weight:248g Eye cup type:rotate CoatingFMC full broadband multiilayer green film Waterproof systemnitrogen filed waterproof and anti fog 10-30x50 Zooming Monoculars Full Optical Broadband FMC Coating 50mm Ojective Lens Large field of view Higher brightness Clearer image 22mm Wide-angle Large Eyepiece Comfortable viewing without vertigo and field of view up to 130m/1000m BAK4 Optical Prism High Definition High Magnification Effectively improve the transmittance and image clarity ,See Clearly and far ,no jitter no vertigo Waterproof Anti-fog Moisture-proof Nitrogen filled inside the body of the mirror soaked in water without water ingress,sutable for outdoot harsh environment Product Details Show 1. Central Focus Wheel:Adjustment using pulley design more convenient 2. Eyepiece Retractable Eyecup: Left and vision may differ by adjusting the clarity of the right eyepiece you can achieve a clear state 3. Lanyard interface: Effectively pievent the product form falling,to avoid hand-holding fatigue for a long time