25-75x60 Zoom Spotting Scope ED Lens Powerful Monocular Bak4 Prism Telescope For
BAK4 high transmission prism. birdwatching lensBAK4 prism/ ED lens/ large objective lens/multi-layer coating. Close focus distance:3M Field of view: 40M/19.2M-1000M Lens type: ED lens ens Coating:FMC Waterproof system: fe waterproof.