The Girard-Perregaux WW.TC (World Wide Time Control) Chronograph Reference 4980 is a highly respected, high-end luxury watch known for combining a world timer with a chronograph (stopwatch) complication.

• The World Timer (GMT Function): Controlled by the second crown at the 9 o'clock position. By aligning your local home city to the 12 o'clock mark, you can instantly read the current time in all 24 major world time zones using the inner rotating 24-hour ring. The ring is split into two colors to act as a day/night (AM/PM) indicator.

• The Chronograph: Controlled by the classic pushers at 2 and 4 o'clock. It uses an advanced vertical clutch system, meaning the stopwatch hand starts smoothly without jumping or lagging.

• Brand & Model: Girard-Perregaux WW.TC World Time Chronograph (Ref. 4980) 

• Case Size: 43mm in diameter and 14mm thick.

• Case Material: Lightweight, brushed titanium, which makes this large watch incredibly comfortable and light on the wrist. 

• Dial: Black dial featuring luminous hands, dot hour markers, a date window between the 1 and 2 o'clock positions, and three sunken sub-dials (chronograph registers).

• Movement: Powered by the in-house GP Caliber 3387 automatic movement. It features 63 jewels, a 46-hour power reserve, and is visible through a clear sapphire exhibition caseback. 

• Strap Options: Typically comes on a matching brushed titanium bracelet or a sporty black rubber strap paired with a titanium folding buckle.