Calibre : 6R5J Automatic with Manual Winding Power Reserve : 72 Hours 24 Jewels Product Description : Introducing the Presage Classic Series watches designed with inherent Japanese elegance. Named Sumi-iro meaning ink black for the colour of its dial, the dial texture is inspired by soft Japanese silk a material which has long featured in Japans history since ancient times in home dcor and clothing. Under sapphire glass, the curved dial with curved hands and indices evoke vintage style and are specifically designed to maximise light reflections. The recessed open-heart feature at 9 oclock, shows the inner beauty of the 6R5J movement within which powers the watch. It also features a recessed 24-hour subdial at 6 oclock. The seven-piece multi-row bracelet has been developed and inspired by 1970s retro-style metal watch bracelets. Not only are these designed for style and to reflect the light, each piece is short at only 6mm long, allowing for maximum movement and comfort. This Classic Series timepiece is powered by an in-house 6R5J calibre, accurate to -15/+25 seconds per day, with a three-day 72-hour power reserve. Seiko Presage: Timeless looks, precise mechanical timekeeping. Minimalistic watch designs with a distinctly Japanese aesthetic. Product Features: Gender : Men Movement : Automatic with Manual Winding Movement Type : Automatic with Manual Winding Calibre : 6R5J Accuracy : 15/+25 seconds per day Duration : 72 hours Case : Metal Case Size : Case Diameter : 40.2 mm Case Thickness : 13.0 mm Case Length : 46.0 mm Lug Width : 20.0 mm Case Shape : Round Dial Colour : Black Water Resistance : 11 bar Clasp : Deployment clasp with push button release Glass Type : Dual-curved sapphire crystal Functions : 24-hour hand, Stop seconds hand function Band Material : Stainless Steel Band Colour : Steel Other Specifications : Screw case back, See-through case back