ASVIL25-75x70 Spotting Scope Monocular Telescope Refraction Zoom Hunting Optics BAK4 Prism Long Range Waterproof/Tripod

Mak structure: short mirror body, long focal length, taking into account the advantages of refractors and mirrors, effective magnification Large diameter: 70mm large diameter, large amount of light, brighter and clearer imaging Large magnification: 25-75 times continuous zoom, adjustable between any magnification, for multi-purpose observation Enhanced green film: FMC multi-layer broadband green film for sharper and sharper imaging Nitrogen-filled and waterproof: Inject nitrogen into the lens barrel and seal it to IPX7 level, effectively extending the life of the telescope