Akrone C-03: owner reviews and feedback

The Akrone C-03, launched in 2021, is the aviation and field-watch family developed by Nantes watch company Akrone from its experience with special projects created for military units and aviation professionals. The first widely commercialised C-03 was developed with French Army Light Aviation and directly reflected its functional environment: titanium case, immediately readable dial, generous luminous material, aircraft-turbine-inspired crown and robust automatic movement.

The collection subsequently expanded far beyond this ALAT series with civilian Minutes Dial versions and then numerous variations developed around professional requirements, military aviation or everyday use. Akrone successively uses Japanese Seiko NH35 calibres and then Swiss Soprod P024 movements while retaining assembly, inspection and regulation in its Nantes workshop. Recent generations mainly use 39 or 41 mm titanium cases, sandwich dials, sapphire crystal and 100 metres of water resistance.

Design & legibility: an aviation watch conceived as an instrument

The C-03 adopts several historical pilot-watch codes without attempting to reproduce one particular vintage reference. Its principle is based above all on rapid reading: highly contrasted dial, large markers or numerals, easily differentiated hands and a clear peripheral minute track. The sandwich construction used on many versions superimposes an openworked upper plate over a base charged with luminous material, giving the numerals and markers additional depth while increasing their luminous surface. The turbine-inspired crown combined with the highly contrasted sandwich dial forms the most characteristic visual language of the C-03. Depending on generation, Akrone emphasises either hours or minutes, uses black, blue, sand, green or forged-carbon dials and even varies the amount of Super-LumiNova to suit different uses. Recent Horizon models adopt even more direct reading with large numerals and redesigned hands. Certain Désertique variations use a fully luminous dial, while Carbon Fury models exploit the random patterns of forged carbon. The objective nevertheless remains constant: prioritising immediate reading in a cockpit, in the field or simply during everyday wear.

Case, titanium and comfort: from 39 to 41 mm with 100 metres of water resistance

Titanium is one of the materials most closely associated with the C-03. From the ALAT series onwards, Akrone uses grade 2 titanium to reduce weight while maintaining good resistance to corrosion and mechanical stresses. The first generation is offered in 39 and 41 mm, while modern Horizon and Carbon Fury series retain this choice between a compact format and greater presence. The 39 mm C-03 Horizon measures approximately 46.5 mm lug to lug and 11.15 mm thick, whereas 41 mm Horizon watches reach approximately 48.4 mm in length and 12.2 mm thick. The low weight of titanium allows the C-03 to remain comfortable despite its deliberately instrumental design. Current generations frequently use a Gun Metal DLC finish that darkens the case and increases superficial resistance to friction. The crystal is sapphire with internal anti-reflective treatment and lug width is generally 20 mm. Water resistance reaches 100 metres when the push-down crown is correctly closed. FKM straps are particularly suitable for sporting use, while titanium maintains lightness while giving the watch a dressier appearance.

Movement: from the Seiko NH35 to the Soprod P024 regulated in Nantes

The first C-03 generation uses the Seiko NH35, an extremely widespread Japanese automatic calibre known for robustness. It operates at 21,600 vibrations per hour, allows manual winding and provides hacking seconds. Its power reserve is approximately 41 hours. This movement suits the initial positioning of the C-03 well: a relatively accessible tool watch in which reliability and ease of servicing take priority over calibre sophistication. Modern generations progressively move to the Soprod P024, a Swiss automatic movement operating at 28,800 vibrations per hour and providing approximately 38 hours of power reserve. The move to the Soprod P024 is accompanied above all by individual regulation and inspection carried out by Akrone in its Nantes workshop. On several current references, the company states a target average rate of -4 to +6 seconds per day after regulation in six positions. This approach makes it possible to achieve performance more ambitious than the raw industrial tolerance of the movement without requiring external chronometer certification. The philosophy nevertheless remains pragmatic: a familiar calibre, servicing possible through many watchmakers and final regulation performed close to the assembly of the watch.

Chronological milestones and main models (2021–2025)

(2021) Akrone C-03 ALAT Black Titanium:

The first C-03 widely offered to the public is developed in collaboration with French Army Light Aviation and its Entraide ALAT association. The Akrone C-03 ALAT reference not communicated is offered in 39 and 41 mm titanium cases, with approximately 11.95 and 12.75 mm thickness respectively depending on documented configuration. The black sandwich dial follows pilot-watch codes with large luminous markers and the ALAT logo at 6 o’clock. The push-down crown takes the form of an aircraft turbine, an element that remains associated with the family. The crystal is flat sapphire with anti-reflective treatment and water resistance reaches 100 metres. The automatic Seiko NH35 movement provides approximately 41 hours of power reserve. Nylon and titanium bracelets are offered. The series commemorates 1954, the year ALAT was created, and part of the proceeds from each watch is at the time allocated to the Entraide ALAT association.

(2023) Akrone C-03 Minutes Dial Titanium:

The Minutes Dial expands the C-03 towards a broader audience while retaining the aesthetic of an aviation instrument. The Akrone C-03 Minutes Dial reference not communicated uses a 39 mm titanium case approximately 11.8 mm thick and weighing only around fifty grams on a lightweight strap. Its sandwich dial differs from many pilot watches by placing greater emphasis on the minute scale than the hours, a principle directly relevant to navigation and timing. The different dial plates allow the luminous material to show through the openings. The crystal is sapphire and water resistance reaches 100 metres. The movement remains the automatic Seiko NH35 with approximately 41 hours of power reserve, manual winding and hacking seconds. The watch can be paired with different straps and retains a 20 mm lug width. This generation illustrates the transition of the C-03 from an explicitly military series towards a civilian and versatile pilot watch.

(2024) Akrone C-03 Pilot PC-21 Titanium:

In 2024, Akrone continues developing the C-03 in real conditions by entrusting an example to future French fighter pilots for testing aboard the Pilatus PC-21. The Akrone C-03 Pilot reference not communicated then serves as a validation platform for later generations rather than constituting one perfectly identified commercial reference. Observed constraints include vibration, acceleration, changing light levels and the need to read the time immediately in an environment already filled with instruments. The watch retains the general C-03 logic: lightweight case, sapphire crystal, highly contrasted dial, substantial luminous material and 100 metres of water resistance. This testing campaign directly contributes to the specifications announced for the 2025 generation, notably concerning titanium, 39 and 41 mm sizes, improvements to the hands and legibility and the adoption of Swiss mechanics. The example used is eventually presented to the new pilots during their qualification ceremony.

(2025) Akrone C-03 JET Blue Grey 39 mm:

The JET is one of the limited series accompanying the transition between older NH35-powered C-03 watches and newer, more technical generations. The Akrone C-03 JET reference not communicated is documented in 2025 as a series of 50 pieces with a 39 mm titanium case, blue-grey sandwich dial and large luminous numerals at 3, 6, 9 and 12 o’clock. The design remains strongly inspired by aviation instruments, with a turbine crown and significant contrast between hands and dial. The movement is still the automatic Seiko NH35, robust and straightforward to service, with approximately 41 hours of autonomy. The crystal is sapphire and water resistance reaches 100 metres. A black rubber strap reinforces the functional direction of the watch and makes full use of the low weight of titanium. This series forms an interesting step for a collector wanting a compact C-03 still equipped with the historical Japanese mechanics of the family before the widespread adoption of Soprod.

(2025) Akrone C-03 Horizon Tropicale 39 mm:

The Horizon range represents the major modern evolution of the C-03 and transfers military specifications into a watch accessible to the public. The Akrone C-03 Horizon Tropicale 39 mm reference not communicated has a 39 mm grade 2 titanium case with Gun Metal DLC treatment, 46.5 mm lug to lug, 11.15 mm thickness and a 20 mm lug width. The green sunray dial uses sandwich construction and markers filled with BGW9 Super-LumiNova. The sapphire crystal receives internal anti-reflective treatment and the crown is push-down. Water resistance reaches 100 metres. The major change concerns the Swiss automatic Soprod P024 movement, regulated by Akrone in Nantes to a stated average accuracy of -4 to +6 seconds per day after adjustment in six positions. Its power reserve reaches approximately 38 hours. A black FKM strap is supplied as standard, while a titanium bracelet can complete the configuration for more versatile everyday use.

(2025) Akrone C-03 Horizon Désertique 41 mm:

The Désertique places greater emphasis on field functions than the Tropicale. The Akrone C-03 Horizon Désertique 41 mm reference not communicated uses a 41 mm grade 2 titanium case with Gun Metal DLC finish, approximately 48.4 mm lug to lug and 12.2 mm thickness. Its sand-coloured dial is built as a fully luminous sandwich dial: the Super-LumiNova-coated surface provides especially striking reading as ambient light decreases. The bidirectional 60-click bezel is mounted on a ceramic-ball system and can be used for a countdown or approximate tracking of another time zone depending on the insert fitted. The crystal is anti-reflective sapphire and water resistance reaches 100 metres. The automatic Soprod P024 provides around 38 hours of autonomy and receives the same individual regulation in Nantes. The FKM strap is particularly coherent with this interpretation designed around dry and operational environments.

(2025) Akrone C-03 Carbon Fury Grey 39 mm:

The Carbon Fury replaces the conventional metal dial with forged carbon, giving every example a naturally different pattern. The Akrone C-03 Carbon Fury Grey 39 mm reference not communicated combines a 39 mm grade 2 titanium case, 46.5 mm length, approximately 11.4 mm thickness and 20 mm lug width with a carbon sandwich dial. The markers are filled with BGW9 Super-LumiNova and the crown retains its turbine-inspired shape. The crystal is anti-reflective sapphire and water resistance reaches 100 metres when the push-down crown is correctly closed. The automatic movement becomes the Swiss Soprod P024, individually regulated and inspected in Nantes with a stated average rate around -4 to +6 seconds per day in six positions. Its power reserve is approximately 38 hours. A black FKM strap prioritises lightness, while certain configurations can receive a titanium bracelet. Carbon mainly provides a more technical and contemporary identity to the C-03 family.

Choosing the right version: 39 or 41 mm, NH35 or Soprod and dial type

Diameter is the first practical choice. The 39 mm C-03 occupies approximately 46 to 46.5 mm longitudinally and suits a wide range of wrists, including those preferring a comparatively compact pilot watch. The 41 mm gives more space to the numerals and minute track and reinforces its instrument character. The 39 mm format generally provides the best compromise for a C-03 worn every day. The 41 mm remains particularly attractive when visual presence and maximum legibility are the priority.

The choice of calibre mainly separates two periods of the collection. The NH35 is less sophisticated but extremely widespread, straightforward to service and known for robustness. The Soprod P024 operates at a higher frequency and benefits above all from the additional regulation carried out by Akrone. Soprod generations are better suited to someone placing particular importance on workshop-regulated accuracy. Earlier NH35-powered C-03 watches nevertheless retain historical appeal because they correspond to the birth of the family.

The dial substantially changes the personality of the watch. Black remains most directly associated with military instruments, blue or green brings a more civilian character and Désertique or full-lume versions provide a much more spectacular experience in darkness. Forged carbon gives every dial a slightly different pattern. Horizon Black is the most neutral choice, while Carbon Fury and Désertique more openly express their technical character. Legibility remains excellent throughout the range thanks to sandwich construction and substantial luminous surfaces.

The FKM strap is particularly well suited to the tool-watch purpose. It handles moisture well, remains flexible and further reduces the weight of a watch already light because of its titanium case. The titanium bracelet provides greater visual continuity with the case and makes the C-03 easy to wear in urban or professional settings. The titanium bracelet is especially interesting for turning the C-03 into a genuinely versatile everyday watch. With a 20 mm lug width on most modern versions, alternative strap choices remain numerous.

Finally, 100 metres of water resistance is sufficient for most everyday uses, but the C-03 is not a dive watch in the sense of the C-02. The push-down crown must be completely closed and should never be operated underwater. On a pre-owned watch, a recent water-resistance test remains preferable before swimming. The natural purpose of the C-03 remains aviation, field use, travel and demanding everyday wear rather than diving. Other customers’ opinions are essential.

Conclusion

The Akrone C-03 is aimed at enthusiasts seeking a French aviation watch developed from genuine professional constraints rather than simply an aesthetic reproduction of a historical Flieger. Since the first ALAT model, titanium, the turbine crown, strong legibility and sandwich construction have formed its principal signatures. Historical NH35-powered versions prioritise simplicity and robustness, while recent generations equipped with the Soprod P024 add more extensive regulation in Nantes together with materials such as DLC and forged carbon. The 39 and 41 mm formats provide a choice between discretion and presence, while Black, Tropicale, Désertique and Carbon Fury dials offer very different personalities. Its 100 metres of water resistance reinforces versatility without attempting to replace the C-02 for diving.

To compare the lightness of titanium, legibility, accuracy and comfort with actual owner experiences, Dialicious customer reviews provide a particularly useful complement.

(Updated August 2026)