Seiko combine cutting-edge innovation with 130 years of watch making experience and are dedicated to striving for perfection in their timepieces. This watch features with black dial, automatic dual time and open heart. Ref: SSA426J11 Product Information Brand: Seiko Movement Type: Mechanical Movement Calibre: 4R39 Band Type: Canvas Strap Dial: Black Water Resistance: 100m Case Dimension: 40.8mm (W) x 12.8mm (D) Glass Type: Sapphire Crystal Date Function: None