The Glashutte Original Sport Evolution watch collection features classical craftsmanship, great durability, and outstanding engineering to enrich the category of the luxurious sports timepiece. Glashutte original has offered two models within this collection--the PanoramaDatum watch, and the Chronograph watch, both animated by Glashutte Original's proven and excellent Caliber 39 movement. Manufactured in the Glashutte Original factory, and refined by the watchmakers of the House, this selfwinding mechanism is both decoratively rich, and mechanically reliable, an important consideration for a sports watch. Glashutte Original has ensured that the external elements of the Sport Evolution watches are rich in fine detail, and both by look and touch, this great care is quickly verified. Unique to the Glashutte Original Sport Evolution watches, is a strikingly designed bracelet which features a charmingly simple and extremely elegant hidden extension system.