This watch shape is affectionately named Sumo by Seiko fans because of its size and shape and the 12 oclock marker its a substantially strong looking timepiece. This latest design has been upgraded with new modern features, including a ceramic bezel and super hard coating on the case and bracelet for durability. A new 3 row bracelet has been specifically made for this model, while the clasp has also been upgraded. The dial features a fine pressed pattern dial with gradations of grey. Prospex is a combination of the words Professional and Specifications. Seiko Prospex timepieces are designed to be practical, reliable and durable; to meet the high standards required in extreme environments for sports lovers and adventure seekers alike. Since launching Japans first divers watch in 1965, Seikos innovative watchmaking has changed global dive watch standards. 2 Year international guarantee. Benefiting from over 140 years of Seikos watchmaking expertise, this watch is powered effortlessly by the calibre 6R35 and is a higher grade inhouse manufacture automatic movement. Mechanically beating at a frequency of 21, 600vph, it will provide superior automatic timekeeping accuracy of -15/+25 seconds per day with a 70 hour power reserve. Convenient hacking seconds function for re-setting accurate seconds time, this movement is also hand windable and with quick date correction. Peace of mind from magnetic resistance of 4, 800 A/m (60 gauss) and with Seikos Diashock shock protection system. A Sapphire crystal glass offers the highest level of protection against scratches and shattering.