Black Tsuyosa Watch NJ0150-81E

The Watch

"Constant reinvention" is the secret behind the world's most powerful brands - and Citizen knows it well. Discover the Tsuyosa collection, meaning "strength" in Japanese: a retro-inspired timepiece that draws on over 90 years of watchmaking heritage. The round 40mm diameter, 11.7mm thick stainless steel case combines a brushed and polished finish, topped by a sapphire crystal with anti-reflective coating for crystal-clear readability. A knurled crown at 4 o'clock lets you set the time, while the transparent screw-down case back showcases the movement and ensures water resistance up to 5 ATM.

The Dial

Housing a round black dial, this watch strikes a balance between elegance and modernity. Its retro-vintage dial design features three hands with luminescent treatment that sweep across the dial day and night. The hour markers share the same luminescent treatment and are doubled at 12 and 6 o'clock. A minute track around the perimeter keeps time precise. At 3 o'clock, a white date window with magnifying lens adds functionality, and the watchmaker's name is proudly displayed in white capitals beneath the 12 o'clock markers.

The Movement

This timepiece runs on a self-winding automatic movement that winds itself with the natural motion of your wrist. Specifically, it's the Citizen 8210 caliber, featuring 21 jewels, an oscillation frequency of 21,600 vph, and a power reserve of approximately 40 hours.

The Strap

Keeping with the classic yet sporty design, the case is paired with a 3-link stainless steel bracelet with a polished and brushed finish. It fastens securely with a single fold-over deployment clasp.

Water Resistance

This model offers a water resistance of 5 atmospheres (50m). It's built to be beautiful and turn heads - but don't let that fool you; it can handle the elements. You can wear it in the shower, though the Ocarat team recommends leaving it on the edge of the sink to preserve its brilliance and integrity over time. Swimming and diving, however, are off the table - pushing it risks damage and costly repairs.