Tudor Black Bay GMT 79830RB Pepsi Automatic GMT

Model: Tudor Black Bay GMT 79830RB – Pepsi Bezel

Overview:

The Tudor Black Bay GMT is one of the brand's most recognizable modern sports watches, combining the vintage-inspired design of the Black Bay collection with the practicality of a true GMT complication.

Featuring the distinctive red and blue “Pepsi” bezel, matte black dial and Tudor's signature snowflake hands, the Black Bay GMT draws inspiration from classic travel watches while retaining its own identity.

The 41mm stainless steel case, rivet-style bracelet and domed sapphire crystal give the watch a substantial yet traditional appearance, making it an appealing option for collectors looking for a robust mechanical GMT.

This example is presented in excellent overall condition, accompanied by its original box, warranty card, manuals, tag and fully linked stainless steel bracelet.

History:

Introduced at Baselworld in 2018, the Tudor Black Bay GMT marked an important development for the brand, bringing a manufacture GMT movement to the Black Bay collection.

The model takes inspiration from historical dual-time-zone watches, particularly through its bidirectional red and blue 24-hour bezel, a design long associated with international travel and aviation.

Unlike simpler GMT movements that adjust the 24-hour hand independently, the Black Bay GMT features an independently adjustable local hour hand, allowing travelers to change time zones without stopping the movement or disturbing the minute hand.

Powered by Tudor's manufacture Caliber MT5652, the watch combines traditional Black Bay styling with modern movement technology, a 70-hour power reserve and official chronometer certification.

Specifications and Condition:

Overall: Excellent condition with minimal signs of wear

Reference: 79830RB 

Case: Stainless steel case in excellent condition, with only minor hairline scratches along the sides

Bezel: Red and blue bidirectional rotating 24-hour bezel with a flawless surface

Dial: Matte black dial with luminous hour markers and Tudor snowflake hands

Crystal: Domed sapphire crystal in flawless condition

Movement: Running well, with timegrapher reading of approximately 0 seconds per day at the time of measurement

Bracelet: Original stainless steel bracelet with all links included, showing little to no noticeable wear on the bracelet and clasp

Includes: Original Tudor box, warranty card, manuals, tag and fully linked bracelet

Movement:

Tudor Manufacture Caliber MT5652 automatic GMT movement

COSC-certified chronometer

28,800 vibrations per hour (4 Hz)

Approximately 70-hour power reserve

Bidirectional rotor winding

Independently adjustable local hour hand

24-hour GMT display with bidirectional rotating bezel

Silicon balance spring

The Caliber MT5652 is Tudor's manufacture GMT movement, developed to provide a practical travel-time complication with modern mechanical performance.

Its independently adjustable local hour hand allows the wearer to move between time zones without interrupting timekeeping, while the rotating 24-hour bezel can be used to track an additional time zone.

Dimensions:

41mm diameter

Approximately 50mm lug-to-lug

Approximately 14.6mm thickness

22mm lug width

200m water resistance