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The Nautoscaph draws its inspiration from Alsta’s own 1960s dive watches, reimagined to meet the rigorous demands of contemporary exploration. Its distinct skin diver case shape pays homage to the era when form followed function, resulting in a design that is as enduring as it is practical. With 300-meter water resistance, a screw-down crown, and C3 Super-LumiNova ensuring visibility in the darkest depths, every detail is meticulously engineered for reliability. The unidirectional rotating bezel provides a precise tool for divers, while the watch’s case—in 316L stainless steel—balances durability with an elegance that evolves over time. The dial selection reflects a bold, adventurous spirit: from the deep hues of Blue Shark and Great White to the striking tones of Tropic (Orange) and All Red in steel.

By Design

Case                                316L marine-grade brushed stainless steel with polished edges

 

Dimensions                                40mm diameter

                                                                              51.3mm lug-to-lug

                                                                              20mm lug size

                                                                              16.2mm thick

 


Crown                                                   Screw-down, polished stainless steel

                                                                              Cross hatch engarving


Bezel                                                         Steel, unidirectional, black ceramic insert


Dial                                                             Tropic orange with applied C3 Super-LumiNova indices
Functions: Hours · Minutes · Seconds · Date

 


 


Hands                                                  Tapered sword hands with C3 Super-LumiNova

                                                                         

 


Glass                                                      Scratch-resistant sapphire crystal


Caseback                                      Stainless steel · Engraved


Water Resistance         999ft / 300m (30 ATM)

 

Functions: Hours · Minutes · Sconds · Date

 


 

Movement                                Seiko NH35A Automatic

 

                                                                          24 jewels · 21,600 vibrations/hour · 41-hour power reserve


                                                                          ±30 seconds/day accuracy


                                                                          ISO 764 anti-magnetic

 

                                                                          Shock resistant

                                                                           

                                                                          Functions: Hours · Minutes · Seconds - Date display

Functions: Hours · Minutes · Seconds · Date

 


Case                                

316L marine-grade brushed stainless steel with polished edges

 

Dimensions                               

40mm diameter

                                                                               

51.3mm lug-to-lug

                                                                               

20mm lug size

                                                                               

16.2mm thick

 


Crown                                                   

Screw-down, polished stainless steel

                                                                             

Cross hatch engraving


Bezel                                                         

Steel, unidirectional, blue or black ceramic insert


Dial                                                             

Sunburst blue, matte black or brilliant red with applied C3 Super-LumiNova indices
Functions: Hours · Minutes · Seconds · Date

 


 


Hands                                                 

Tapered sword hands with C3 Super-LumiNova

Orange seconds hand (matte black dial only)


Glass                                                       

Scratch-resistant sapphire crystal


Caseback                                       

Stainless steel

Engraved


Water Resistance         

999ft / 300m (30 ATM)

Date

 


Movement

                                                                         

Seiko NH35A Automatic


24 jewels

21,600 vibrations/hour

41-hour power reserve                                                                         

±30 seconds/day accuracy

 

ISO 764 anti-magnetic

 

Shock resistant

                                                                           

Functions: Hours · Minutes · Seconds - Date display
Functions: Hours · Minutes · Seconds · Date

 


 

 

 

Built to Last a Lifetime of Exploration

 

Alsta strives to draw on its heritage and provide best in class skin diver timepieces, focusing on thinness, mechanical precision and elegance of design.

The modern Nautoscaph follows the design language of the original, however, it has taken on some different looks, such as coloured dials and even a bronze case. The elegance of the Nautoscaph has remained even though the dimensions have increased. The ruggedness and waterproofness is at the heart of the Nautoscaph and despite its elegant looks, it is made to withstand the knocks and bumps of any good adventure.

The Nautoscaph started life as a skin diver, and is still a skin diver at heart, although it is rated to withstand professional dive depths. This is where the Nautoscaph will continue to sit in the Alsta line. Tough enough for the mountain face or the ocean and elegant enough for the board room or the dinner table.

 

Nautoscaph

Black

Nautoscaph

Blue Shark

Nautoscaph

All Red

Nautoscaph

Black

Nautoscaph

Blue Shark

Nautoscaph

Black

Nautoscaph

Blue Shark

Nautoscaph

Tropic Orange

Nautoscaph

All Red

Nautoscaph

Great White

Nautoscaph

All Red