Our remarks

Omega Seamaster Ploprof – Ref. 227.90.55.21.99.001 – Titanium – Titanium Bracelet – Box & Papers – 2023 – Unworn – Full Set

We are pleased to present this unworn and exciting Omega Seamaster Ploprof Ref. 227.90.55.21.99.001, a bold and highly specialized professional dive watch from Omega. Originally developed for saturation divers, the Ploprof—short for “Plongeur Professionnel”—stands as one of the most distinctive and capable dive watches ever created.

This clever modern execution is manufactured  entirely in lightweight yet robust titanium, offering superior wearability despite its substantial presence. The asymmetrical case design, measuring 55 x 45 mm, is instantly recognizable and purpose-built for extreme underwater conditions, combining uncompromising functionality with a striking aesthetic.

The sandblasted grey dial enhances the tool-watch character of the Ploprof while ensuring optimal legibility. Oversized hands and hour markers, filled with luminous material, provide excellent visibility even in the darkest environments. The signature orange accents—including the central seconds hand and bezel-lock release pusher—add a dynamic contrast and reinforce the model’s professional diving heritage.

A defining feature of the Ploprof is its patented bezel-lock mechanism, operated via the prominent pusher on the side of the case, ensuring that the unidirectional rotating bezel cannot be accidentally adjusted during a dive.

At its heart beats the Omega Co-Axial Master Chronometer Caliber 8912, a state-of-the-art automatic movement resistant to magnetic fields up to 15,000 gauss. Certified by METAS, it guarantees exceptional precision, performance, and reliability, with a power reserve of approximately 60 hours. The movement is visible through the sapphire crystal case back, showcasing Omega’s high standards of finishing.

The watch is fitted with a full titanium bracelet, perfectly complementing the case while ensuring durability and comfort, even in the most demanding environments.

This Omega Seamaster Ploprof Ref. 227.90.55.21.99.001 is offered with:

- Original Omega presentation box & outer box

- Original warranty card (2023)

- All thre red cards

- Full set, hang tag, leather card holder, describtion booklet, 

- Unworn condition - still the sticker on the back

- Titanium case and titanium bracelet

- Sapphire glass back

- Bezel-lock safety mechanism lever

- Omega Co-Axial Master Chronometer Caliber 8912

- Anti-magnetic to 15,000 gauss

- Waterproof 1200m

"A true tool watch icon, the Seamaster Ploprof combines high-tech engineering with 1970ies iconic design, making it a standout piece for collectors and diving enthusiasts alike. This lightweight Omega Ploprof is a pure expression of professional watchmaking—engineered without compromise for the most extreme underwater exploration.”