Nauteiko Openheart Blue

The Nauteiko Openheart Blue Roman stands out with its blue open-heart dial, which allows you to admire the automatic movement in full operation, adding dynamism and elegance. The 41mm 904L stainless steel case offers a solid and refined finish, while the contrast between the deep blue dial and silver details conveys a contemporary and exclusive style.

Designed for those seeking a striking yet sophisticated watch, this design combines top-quality materials with reliable mechanics. The 904L steel strap ensures strength and durability, the scratch-resistant sapphire crystal maintains impeccable clarity, and the NH38 automatic movement guarantees precision and reliability, visible through its open-heart window.

Technical specifications

· Diameter: 41 mm (excluding crown), perfect balance on the wrist
· Movement: NH38 automatic, reliable and visible in the open-heart
· Thickness: 12.5 mm, elegant and versatile profile
· Crystal: Scratch-resistant sapphire with anti-reflective coating
· Luminosity: Luminova on hands and indices, excellent nighttime visibility
· Case: 904L stainless steel, durable and premium finish
· Crown: Screw-down, functional and secure
· Dial: Blue with open-heart window, sophisticated and distinctive
· Wrist size: Adjustable between 14.5 cm and 22 cm
· Lugs: 20 mm, ideal for interchangeable straps
· Strap: 904L stainless steel with safety clasp
· Case back: Closed steel, discreet and robust
· Water resistance: 3 ATM, suitable for daily use and splashes