Citizen COLLECTION Record Label Tsuno Chrono White AN3660-81A Men's Watch,

Accuracy: ±20 seconds per month Second hand stop function / Date quick correction function / 1/1 second chronograph (12 hour counter) Battery life: Approximately 2 years / Battery used: 280-44 5 ATM water resistant Luminous (hands and indexes) This updated version of the Chronograph Challenge Timer, Citizen's first watch with a full-fledged chronograph function, debuted in 1973. This iconic model has earned the nickname "Tsuno Chrono" (Horn Chrono) due to the horn-like push button located at the 12 o'clock position on the case. Unlike typical watches, this watch's unique balance unfolds unconventionally, creating an exquisite design that harmonizes the soft case shape with the sharp bezel. The 38.0mm case size ensures a comfortable fit on the wrist. / Caliber: 0510 / Accuracy: ±20 seconds per month / Second hand stop function / Rapid date adjustment function / 1/1-second chronograph (12-hour counter) / Battery life: approximately 2 years / 280-44 volt battery / Water resistance: 5 ATM / Luminous (hands and indexes)