Offering different magnifications ranging from eight to 12.5 times, the new DCF SP-series models are housed in a nitrogen-filled magnesium-alloy waterproof body (JIS Class 6) and protected with a full-body rubber housing. They deliver exceptional image quality, thanks to an inner-focus optical design incorporating hybrid aspherical eyepiece lenses, high-resolution phase-coated roof prisms, hydrophobic coating on objective and eyepiece lenses, and multi-coated optical elements. Their lightweight design and long eye relief allow for fatigue-free viewing, even during extended observations. They also come equipped with such user-friendly features as an extra-short minimum focusing distance, a diopter adjuster with lock mechanism, and helicoid-type eyepiece rings with four click stops.