Our Nautoscaph IV Tropic is a limited release and we have a small number of pieces available.

The Nautoscaph IV features a unidirectional bezel, removing the risk of it being accidentally turned while underwater, which could result in a fatal miscalculation of dive time. It is manufactured and tested to withstand the pressure of depths of 999ft (300m or 29atm). The original Nautoscaph had 999ft on its dial, a touch we loved and therefore kept. For the Nautoscaph IV, we have introduced our ‘Valencia’ beads-of-rice bracelet to complement the piece.

Every component of Alsta timepieces is manufactured in Switzerland, and it is powered by a Seiko NH35A. The watches are assembled, tested and quality-passed in Switzerland. Affordable quality engineering, manufacturing and design will always be a hallmark of Alsta watches.

Like all of our Nautoscaph releases, we make all possible technical, safety, and performance improvements while retaining as many of the original designs as possible. Our beautifully styled Alsta timepieces ooze the same romance and charm of the originals. The main differences are modern-day materials and technology. Like the originals, they are powered by quality automatic movements.

Specification:

Case 316L Marine grade brushed stainless steel with polished edges

Dimensions 40mm diameter case, 51.3mm lug to lug, 20mm lug size, 16.2mm thickness including crystal, 43.4mm width including crown, 217.8mm total length including opened-out bracelet

Crown Screw down, polished stainless steel

Dial Shimmer Orange with applied C3 Super-LumiNova

Hands Tapered sword with C3 Super-LumiNova. Orange seconds hand with C3 Super-LumiNova insert

Movement Automatic Seiko NH35A, 24 jewels

Functions Hours, minutes, seconds, date

Caseback Stainless steel, engraved

Glass Sapphire crystal

Water resistance 999ft/300m

Bracelet Alsta “Valencia” bracelet with safety deployant clasp. 20mm at end tapering to 17.7mm

Bracelet Strap bars Spring-loaded stainless steel