Description

The Citizen Tsuyosa Shore NJ0231-56L (popularly known among watch collectors and horological enthusiasts by its series nicknames, the "Tsuyosa Shore", "Tsuyosa Diver", or "Shore Sunray Blue") is a versatile, summer-ready Swiss-inspired mechanical sports watch. Evolving Citizen's wildly popular integrated Tsuyosa line into an active aquatic diver silhouette, this 40mm timepiece combines a vibrant sunray blue dial with a matching unidirectional rotating bezel. Designed for modern gentlemen who appreciate mechanical reliability, nautical utility, and modern executive styling, it transitions seamlessly from beachside aquatic activities to formal evening occasions. The defining visual highlight of this NJ0231 reference is its striking sunburst blue dial face, which catches light dynamically and shifts tone under varying light angles. Surrounding the dial is a 120-click unidirectional rotating bezel fitted with a blue timing insert for tracking elapsed duration. Luminous baton indices and polished hands deliver high legibility in low-light environments, while a magnified date window (cyclops lens) sits at the 3 o'clock position under a scratch-resistant sapphire crystal to enhance daily readability. Beneath its sporty exterior, the watch is driven by Citizen's in-house Caliber 8210 automatic mechanical movement. Operating at a frequency of 21,600 vibrations per hour with 21 jewels, this self-winding engine offers manual hand-winding capability, sweeping central seconds, and second-hand hacking functionality for precise time setting. Powered naturally by the kinetic motion of the wearer's wrist, the Caliber 8210 provides a dependable power reserve of up to 42 hours. The 40mm watch housing is meticulously crafted from marine-grade 316L stainless steel, featuring an ergonomic 12.5mm profile and a compact 45.6mm lug-to-lug length for balanced wrist proportions. Protecting the dial display is a scratch-resistant synthetic sapphire crystal fitted with a date magnifier lens. Built for active marine durability, the case incorporates a transparent exhibition caseback—revealing the mechanical movement at work—achieving a certified 100-meter (10 bar / 330 ft) water resistance rating. The watch comes completed on an integrated stainless steel link bracelet with brushed and polished finishing, fitted with a three-fold deployment clasp and push-button release.

Presentation

• Warranty: Yes per manufacturer
• Packaging: Original retail gift box

Trusted since 2003

• Trading online over 20 years
• Thousands of South Africans trust us
• Secure payments
• Servicing done at SA service centre