TUDOR announces the Black Bay GMT One for Only Watch 2021, a unique execution of its Black Bay GMT with specially finished case, bracelet and movement as well as Master Chronometer certification by METAS.
For Only Watch 2021, TUDOR has created a unique Black Bay GMT with a striking case and bracelet finish that is the result of a secret stainless-steel ageing technique. The MT5652 Manufacture Calibre powering this unique watch, capable of keeping track of time in three time zones simultaneously, also received an aesthetic treatment to match the case in style that required the bridges and mainplate to be coated in black before being aged by barrel tumbling.
The Black Bay GMT One is a Master Chronometer, one of the industry’s most demanding certified standards, guaranteeing Swiss manufacturing, precision of 5 seconds (0 +5), anti-magnetism to 15’000 gauss, stated water-resistance and stated power-reserve. Achieving this certification required a substantial number of changes to the TUDOR Manufacture calibre and highlights the brand’s technical expertise and know-how.
Technical details
Model: Tudor Black Bay GMT One Only Watch 2021
Reference M7983/001U
Case
Aged 41mm stainless-steel case
41 mm diameter
14.6 mm thick
Aged stainless-steel open case back, engraved with PIECE UNIQUE and BLACK BAY GMT ONE
Unidirectional rotatable bezel in aged stainless steel, with aged stainless-steel 24-hour engraved disc
Screw-down aged stainless-steel winding crown with the TUDOR rose in relief
Domed sapphire crystal
Waterproof to 200 m (660 ft)
Dial
Matt black, domed
Matt grey markings matching the hands and hour-markers
Matt ruthenium-plated applied hour markers with beige luminescent material with green emission
Matt ruthenium-plated “Snowflake” hands with beige luminescent material with green emission
Movement
Manufacture Calibre MT5652-1U
Self-winding mechanical movement with bidirectional rotor system
Chronometer-certified by the COSC (Swiss Official Chronometer Testing Institute)
Master Chronometer-certified by METAS
Power reserve of 70 hours
Variable inertia balance, micro-adjustment by screw
Non-magnetic silicon balance spring
Frequency: 28,800 beats/hour (4 Hz)
Functions
Centre hour, minute and seconds hands
Stop seconds for precise time setting
Bracelet
Aged stainless-steel three-link bracelet with folding clasp and safety catch, satin-finished
