Seiko Men's Arctura Kinetic Autorelay Watch . (Kinetic Watches are Seiko's latest and most technically advanced watches, which contain their own internal electrical generators--operated by natural wrist movements--making them independent of conventional storage batteries.). Approximate case thickness: 10mm. Approximate case diameter: 41mm. Water Resistance - 100M. LumiBrite Hands & Markers. Sapphire Crystal. Energy depletion forewarning function. Time Relay function. Manual energy saving function. Automatic energy saving function. 4-year energy storage. Automatic power generator. Hour, minute and second hands. Blue Dial. Stainless Steel Case and Bracelet. # SNG071 SNG071P1 #.