Oberwerk Deluxe Series are close to The Ultra Series in optical performance and construction quality, but at a substantially-lower price. The 15×70 Deluxe has excellent sharpness across almost the the entire field, with rugged construction and precise center focuser. Of course these are fully broadband multi-coated, waterproof, and nitrogen charged. The eyepieces are threaded to accept 1.25″ filters. Includes our exclusive Heavy-Duty aluminum-frame case. Also includes the Oberwerk Heavy-Duty L Adapter and our premium heavy-duty denim strap.