Visionking 25-75x70 MAK Bak4 Waterproof Spotting Scope for birdwatching with tripod Fogproof Nitrogen Filled

Magnification 25x-75x and Waterproof and Nitrogen Filled.BAK4 Prism system and FMC Green Coating,high resolution and good field of view The focusing screw of vision King's target viewing mirror is smooth, without gap and image floating. It is ground out by grinding paste, and the local surface shape error is less than 0.5% The target viewing mirror of visionking brand adopts a 48 degree prism, and the reflecting surface of the prism (45 degrees) is silver plated Vision King's wide-band antireflective green film for target viewing lens and objective lens The viewfinder eyepiece of visionking brand is 6-Piece fully coated.syi