Professional Design Handheld Telescope 10-30x50 Long Range Zoom Monocular For Smartphone With Adapter & Tripod

Field of View : 5.6-2.7° Eyepiece diameter : 6.2-2.3 Prism Description : BAK4 Water Resistance Level : IPX4 Objective Lens Diameter : 50mm Lens Coating Description : FMC Magnification : 10-30 Material : Plastic Model Number : 10-30x50 Type : Monocular Origin : Mainland China