First launched in 2021, the watches were designed for serious divers as well as enthusiasts seeking a robust everyday sports watch, the new Seastar 2000 Professional remains true to its tool-watch roots while offering improved versatility through interchangeable straps and multiple colour options.

The collection fetaures 44 mm watches crafted from 316L stainless steel. Notably, the watches are ISO 6425:2018-certified, confirming its credentials as a professional diver's watch, and offers an impressive water resistance of 600 metres. One of its defining features is the helium escape valve positioned at 9 o'clock. This allows trapped helium molecules to safely exit the case during decompression after saturation dives, protecting the movement from pressure-related damage. There is a unidirectional stainless steel bezel with a ceramic insert for precise dive timing, a screw-down crown, and a domed sapphire crystal with anti-reflective coating for enhanced durability and legibility underwater.

The latest Seastar 2000 Professional references introduce a fresh palette of colours inspired by the sea, ranging from deep blue and storm grey to a vibrant orange. Each dial features an engraved wave motif that adds texture and depth while reflecting the movement of water. Large baton-style hands and applied indexes are coated with Swiss Super-LumiNova, ensuring clear readability whether underwater or in low-light environments. The collection comprises five references: T120.907.11.051.00, T120.907.17.041.00, T120.907.17.281.00, T120.907.37.041.00, and T120.907.37.051.00. 

Powering every model is the ETA C07.111 Powermatic 80 automatic movement, offering an extended power reserve of up to 80 hours. The movement is equipped with a Nivachron balance spring, designed to improve resistance against magnetic fields, shocks and the rigours of everyday wear. Owners can also admire the movement through a transparent sapphire caseback.

The watches are equipped with Tissot's interchangeable strap system, allowing wearers to easily switch between a durable tropic-style rubber strap and a stainless steel bracelet.

The steel bracelet features a newly developed diver's clasp with push-button operation, a security lock and a diver's extension, making it easy to adjust the fit over a wetsuit without sacrificing comfort for daily wear.