Nautilus Open Heart

Case diameter

Available in 36 mm and 39 mm, excluding the crown

Case thickness

12 mm

Lug width

20 mm

Crown

Screw-down crown

Wrist fit

Adjustable from approximately 14.5 cm to 22 cm

Bracelet

316L stainless steel bracelet with a secure clasp

Case back

Exhibition case back revealing the movement and rotor

Water resistance

3 ATM / 30 metres

Movement

Japanese NH35 automatic movement

Crystal

Scratch-resistant sapphire crystal with an anti-reflective coating

Case

316L stainless steel

Bracelet

316L stainless steel

Case back

Transparent exhibition case back

Shipping

Complimentary worldwide shipping is included with every order. Please allow up to 2 business days for order preparation, quality inspection, and careful packaging. Once dispatched, delivery may take up to 10 days, depending on the destination.

Returns

We offer a 30-day return window, giving you time to receive and consider your watch with confidence. To be eligible for a return, the watch should be unworn, undamaged, and returned in its original condition and packaging.

An automatic watch is powered by the natural motion of your wrist rather than a battery. As you wear it, an internal rotor moves with you, winding the movement and storing the energy required to keep the watch running.

The Japanese NH35 movement offers a power reserve of approximately 41 hours when fully wound. If the watch is left unworn and stops, it can be started again by gently winding the crown or simply wearing it.

Rooted in traditional mechanical watchmaking, an automatic movement brings together precision engineering, craftsmanship, and the distinctive character of a watch powered by motion.