Ever practical, the watch features a compass functionality, whilst its super-hard coating gives it shine and strong scratch resistance. The in-house built 6R54 Calibre is the first mechanical GMT movement in a Prospex watch to have a three-day power reserve, allowing tracking of two different time zones at the same time. 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. Case Material:Stainless steel (super hard coating) Crystal:Sapphire with magnifier Crystal Coating:Anti-reflective coating on inner surface LumiBrite:Lumibrite on hands and indexs Band Material:Calfskin Clasp:Three-fold clasp with push button release Caliber Number:6R54 Movement Type:Automatic with manual winding capacity Accuracy:+25 to -15 seconds per day Power reserve: Approx. 72 hours (3 days) Thickness: 13.6mm Diameter: 39.5mm Length: 46.4mm Lug Width: 20mm CONTACT OUR SALES TEAM (905) 458-5588 FOR INFORMATION REGARDING OUR PRICE MATCH GUARANTEE Case Size Other Specifications Other Features Taking its name from the original and much-loved Seiko ‘Alpinist’ – launched in 1959 for Japanese ‘Yama-otoko’ mountain men, reliable in treacherous terrain – this watch further evolves the Alpinist specifications and overall design – with a legibility focus. Water Resistance:200 bar Its Arabic numerals are a signature feature of Alpinist pieces, whilst the curved sapphire glass, 24-hour display on the bezel and red 24-hour hand enhance the legibility further.