Exceptional performance, wide-angle eyepiece with a long 20mm eye relief and waterproof body.

• Designed for use with PENTAX spotting scopes and with astronomical telescopes with appropriate 1 1/4" or 2" focusers
• Weatherproof construction for greater durability
• Features high-grade Lanthanum glass with high refraction and low dispersion
• Original multi-coating and special coating on the laminated surfaces effectively reduce flare and ghosting, achieving extremely high lighttransmission performance
• Removable eyecup allows attachment of an adaptor of 43mm in diameter with a 0.75mm pitch