At first glance, the Omega Seamaster 120 "Baby PloProf" captures attention with its bold, utilitarian design that signifies its purpose as a serious tool watch. The robust 37mm stainless steel case is characterized by its chunky shape, designed to provide maximum protection for the crown and bezel. The case’s distinctive form, with its curved lugs and integrated crown guards, ensures that it sits comfortably on the wrist while remaining resilient against the pressures of deep-sea diving.

One of the standout features of this Seamaster is its bi-directional rotating bezel, which is marked with bold, minute graduations. The bezel’s notched edge offers a secure grip, even when wearing diving gloves, making it easy to measure elapsed time underwater – a critical function for any diver. The bezel insert, often made of durable anodized aluminum, complements the overall utilitarian aesthetic of the watch.
The Dial
The dial of this Omega Seamaster is a masterclass in legibility, designed to be easily read in low-light conditions and underwater environments. The matte black or deep blue dial features large, luminous hour markers and hands, treated with tritium for enhanced visibility in the dark depths of the ocean. The broad sword-style hands, combined with a bold square minute hand, ensure that crucial information is readily available at a glance. At 3 o'clock, a date window adds practicality without cluttering the dial, keeping with the watch's functional ethos.

Protected by a thick, domed mineral crystal, the dial maintains clarity and resistance to scratches and pressure. The crystal's slightly raised profile further enhances the watch’s rugged character, safeguarding it against the rigors of underwater exploration.
The Movement
Powering the Seamaster 120 "Baby PloProf" is Omega’s Caliber 1010, a reliable and sturdy automatic movement introduced in the mid-1970s. This 17-jewel movement was known for its robustness and precision, offering a quickset date function and hacking seconds for precise time-setting – features that were highly regarded among professional divers and watch enthusiasts alike.

The caseback of the Seamaster 120 is engraved with the iconic Omega hippocampus logo, a symbol of the brand’s rich heritage in creating diving watches. This screw-down caseback, along with the screw-down crown, ensures a water resistance of up to 120 meters (400 feet), solidifying the watch’s status as a capable diving instrument. Just know that we do not recommend swimming with your vintage watch!

The watch is typically paired with an integrated stainless steel bracelet which is designed for durability and comfort in harsh marine environments. The bracelet features a secure folding clasp with a safety latch, allowing divers to adjust the fit over a wetsuit easily.

The Omega Seamaster 120 "Baby PloProf" 166.0250 is more than just a smaller version of a legendary dive watch; it is a classic in its own right. While it shares design cues with the original "PloProf," this model stands out for its wearability and versatility, making it a favorite among divers and collectors alike. Its bold design, reliable movement, and genuine diving capabilities reflect a significant era in Omega's history, where innovation and performance were paramount.

For those who appreciate the combination of vintage charm and professional functionality, the "Baby PloProf" offers an opportunity to own a unique piece of Omega’s illustrious Seamaster lineage. A watch that is as at home under the sea as it is on the streets, the Seamaster 120 reference 166.0250 continues to captivate with its enduring style and adventurous spirit.

What we love:

Watch not often seen
Beautiful case condition
Wonderful black dial

What you should know:

Unless otherwise stated, it is common for vintage watches to not come with box and papers. In the rare example that a watch does come with box and papers it will be mentioned in the description. All purchases come with a bespoke black wooden watch box and warranty card.