The Story
The Oris TT3 Chronograph, Second Time Zone (reference 01 677 7590 7764-07 4 28 03R) features a 42.5 mm multi-piece titanium case with black plating and a 24-hour scale top ring. It is powered by the Oris Caliber 677, offering a 48-hour power reserve. The watch includes central hands for hours, minutes, and chronograph 1/4 seconds, along with three subsidiary dials for continuous seconds, 30-minute, and 12-hour counters. Additional functions comprise a date window and a 24-hour hand for a second time zone. The black dial is protected by a domed sapphire crystal with anti-reflective coating inside. Completing the design is a black rubber strap. Water resistance is rated at 10 bar (100 meters).