Citizen tsuyosa

 Citizen Tsuyosa specs.

The name "Tsuyosa" comes from the Japanese word tsuyosa (強さ), which translates to "strength" or "power." [1, 2, 3]

Meaning and Origin

Literal Translation: In Japanese, tsuyosa means strength. [1]
Watch Heritage: Citizen chose the name to reflect the robust build, reliable automatic movement, and everyday durability of the watch line. It also pays homage to the sturdy stainless steel construction of its late-1990s predecessors (like the NH299 series) that inspired the modern design. [1, 2, 3, 4]
Naming History: The watches were originally launched using standard reference numbers. The moniker "Tsuyosa" first started as a nickname used by European watch collectors and fans before Citizen officially adopted the name

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The standard Citizen Tsuyosa is powered by the in-house Caliber 8210 automatic movement, while select newer variants (like the Tsuyosa 60) use the upgraded Caliber 8310/8322. [1, 2, 3, 4]

Standard Caliber 8210 Movement Specifications

Type: Mechanical automatic (self-winding with manual hand-winding and hacking seconds)
Jewels: 21 jewels
Frequency / Beat Rate: 21,600 vibrations per hour (3 Hz)
Power Reserve: Approximately 40 to 42 hours
Accuracy: Typically around -20/+40 seconds per day
Functions: Central hours, minutes, sweeping seconds, and a date display (at the 3 o'clock position) [1, 2, 3, 4, 5, 6]

Upgraded Caliber 8310 Movement (Tsuyosa 60 / Select Models)

Power Reserve: Upgraded to approximately 60 hours
Functions: 3-hand display with date and hacking/hand-winding suppor

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The Citizen Tsuyosa is a popular automatic sports watch featuring an integrated bracelet and vibrant sunray dial options. [1]

Key Specifications (Classic 40mm)

Case Diameter: 40 mm
Case Thickness: 11.7 mm
Lug-to-Lug: 45 mm
Case Material: Stainless steel
Crystal: Sapphire crystal with a magnifier lens over the date window
Water Resistance: 50 meters (5 bar / still water swimming)
Crown Position: At 4 o'clock (push-pull)
Caseback: Exhibition see-through mineral glass

Movement

Calibre: Citizen in-house Calibre 8210 (automatic and manual winding)
Vibration Frequency: 21,600 vph (3 Hz)
Jewels: 21 jewels
Power Reserve: Approximately 40 to 42 hours
Functions: Hours, minutes, sweeping seconds, and date display [1, 2, 3, 4, 5]

Bracelet

Material: Integrated 3-link stainless steel bracelet with a mix of brushed and polished finishes
Clasp: Stamped steel folding deployment clasp with push-button release [1, 2, 3]
The design flows seamlessly into an integrated stainless steel bracelet, a highly sought-after feature that provides a cohesive, high-end look and exceptional comfort on the wrist. 

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