The CITIZEN Tsuyosa Small Second NK5010-51X is a bold reinterpretation of integrated bracelet watches, now upgraded with a small seconds subdial and a rich olive green guilloché dial. Its 40mm stainless steel case houses Citizen’s in-house Caliber 8322 automatic movement with up to 60 hours of power reserve. The recessed crown at 4 o’clock enhances comfort and symmetry, while a scratch-resistant sapphire crystal and exhibition case back add luxury appeal. A brushed stainless steel bracelet with deployant clasp completes this stylish everyday timepiece, rated for 50 meters water resistance.

Key Features

• 40mm stainless steel case with integrated bracelet design

• Olive green guilloché dial with small seconds subdial at 6 o’clock

• Automatic Caliber 8322 movement with ~60-hour power reserve

• Sapphire crystal with anti-reflective coating

• Exhibition screw-down case back

• Recessed crown at 4 o’clock for improved comfort

• Stainless steel bracelet with deployment clasp and push-button release

• Water resistant to 50 meters (5 ATM)

Specifications

• Model: NK5010-51X

• Movement: Citizen Caliber 8322 (Automatic, hand-winding, hacking)

• Power Reserve: Approx. 60 hours

• Case Diameter: 40mm

• Case Thickness: ~11.7mm

• Lug Width: 22mm

• Dial Color: Olive Green (guilloché texture)

• Crystal: Sapphire with anti-reflective coating

• Bracelet: Integrated stainless steel with push-button deployant clasp

• Water Resistance: 50 meters / 5 ATM

• Crown Position: 4 o’clock (recessed)

• Case Back: Exhibition, screw-down

• Weight: Approx. 147g