The A-2TR Vintage GMT is inspired by classic U.S. military watches. The period authentic dial is complimented by our rugged U.S. Patented 40 mm solid titanium Unibody case. This watch has all the requisite features when it comes to delivering focused essential function... a 2nd time zone GMT feature, and date, a top quality precise & reliable Swiss made quartz movement, durable screw down crown & case back, scratch resistant sapphire crystal, and a unidirectional titanium elapsed time / directional ring.