Designed with a stainless steel case and bracelet and black dial, this 40.2mm Grand Seiko Caliber 9S85 offers high precision and reliability that endures. Grand Seiko Hi-Beat watches incorporate a new Spron alloy, delivering a longer power reserve and superior durability. The new mainspring produces 50% more torque, meeting the requirements for 36,000 vibrations and providing a 55-hour power reserve. The accuracy of a mechanical watch depends greatly on the precision of its hundreds of individual parts. This is why all the components of each Grand Seiko watch are made by Seiko in-house and to the same high standards. Featuring a see-through caseback, automatic movement allows for self and automatic winding capabilities and features 37 jewels, with accuracy -3 to +5 seconds per day under static conditions. 100M Water Resistant. Men’s Grand Seiko Mechanical Hi-Beat 36000 40.2mm stainless steel case and bracelet with black dial.