The Yema Navygraf Heritage Blue YNAV25-GMis inspired by the classic 1970s model, with some modern tweaks. The double-domed hesalite crystal and expoxy bezel insert on the unidirectional bezel are still present, but under the hood is the modern Swiss Made Sellita SW200 automatic movement. The elegant 39mm case fits beautifully on the wrist and with the gorgeous yellow hands, the watch will stand out on your wrist but not stick out! The Navygraf Heritage is a beautiful nod to the past, but not without sacrificing being a good, modern watch!