Nautilus Style · Open Heart Dark Blue

The rounded-octagon case and horizontally embossed dial make this the definitive sport-chic watch.

This version features an open-heart window showing the balance wheel.

• Case: 316L stainless steel, 41 mm
• Movement: Seiko NH38 automatic (open heart)
• Crystal: Sapphire, anti-reflective
• Water resistance: 5 ATM (50 m)