The NK0024-54X upgrades the standard Tsuyosa with a 60-hour reserve and sapphire glass front and back. Specs, price, and where to buy in Ireland.
Citizen Tsuyosa 60 (NK0024-54X): Double the Power Reserve of the Standard Tsuyosa
The Citizen Tsuyosa 60 NK0024-54X is a 40mm automatic watch with a green sunray dial, sapphire crystal front and back, and a new in-house caliber that pushes the power reserve to 60 hours, priced at €359.10 on Amazon.ie.
This is a newer, higher-tier release in the same Tsuyosa family as the NJ0150 already covered elsewhere on this site, so this review is built from Citizen’s own product pages, press coverage of the launch, and Amazon.ie’s listing data, rather than a hands-on test unit or owner reports, since this reference has no review history yet anywhere online. For the rest of Citizen’s range, the Eco-Drive and standard Tsuyosa models are covered in our full Citizen round-up.
- What the new caliber actually changes
- Sapphire front and back, what that gets you
- How it compares to the standard Tsuyosa
- Buying it through a marketplace seller on Amazon.ie
40mm automatic, sapphire crystal, 60 hour power reserve
- Price €359.10 on Amazon.ie, sold through third-party marketplace seller uhrenonline24 rather than Amazon directly, with only 2 in stock at time of writing.
- What's new Caliber 8310 replaces the standard Tsuyosa’s 8210, taking the power reserve from 40 hours to 60. Citizen confirmed this as part of a wider Autumn 2025 Tsuyosa 60 launch, reported at the time by Notebookcheck.
- Glass Sapphire crystal on the front, and a sapphire exhibition caseback so the movement is visible from behind, not just mineral crystal.
- Track record No owner reviews exist yet anywhere online for this exact reference, so treat the assessment below as spec-based, not field-tested.
An automatic watch runs on a spring wound by the motion of your wrist, so it stops once that spring runs down and you take the watch off. The standard Tsuyosa’s caliber 8210 holds about 40 hours, meaning a watch taken off Friday evening is usually stopped by Sunday morning. Caliber 8310 in this NK0024-54X extends that to roughly 60 hours, comfortably covering a full weekend off the wrist without needing to reset the time and date on Monday. It’s a genuine mechanical upgrade, not a marketing figure. The tradeoff is price: this reference runs meaningfully higher than the standard Tsuyosa for that extra margin.
A genuine mechanical step up from the standard Tsuyosa, not just a cosmetic refresh: sapphire glass on both sides and a real 60 hour reserve you will actually notice if you rotate watches or travel light. The price reflects that jump, and with no owner track record yet and stock down to two units through a marketplace seller, this is a considered buy rather than an impulse one.
- A genuine 60 hour power reserve, confirmed by Citizen and reported independently at launch, not just a spec sheet number
- Sapphire crystal on both the front and the caseback, a real step up from mineral glass
- Two-tone case and integrated bracelet give it a more finished look than the standard Tsuyosa
- Anti-magnetic to 4,800 A/m, enough for everyday exposure to phones and laptops
- No owner reviews exist yet anywhere online, so long-term reliability is unconfirmed
- Sold through a third-party marketplace seller on Amazon.ie rather than Amazon directly
- Only 2 units in stock at time of writing, so availability is not guaranteed
- 50m water resistance covers rain and splashes, not swimming or diving, despite the number sounding higher
Standard Tsuyosa or the Tsuyosa 60?
The standard Tsuyosa (caliber 8210, 40 hour reserve) is the cheaper entry point and is a proven, widely reviewed watch at this point.
This NK0024-54X is the one, caliber 8310, 60 hours, sapphire front and back. The genuine upgrade, at a genuine price increase.
The standard Tsuyosa has an established owner track record. This reference does not yet, being a newer release.
What's actually different about the Tsuyosa 60 versus the standard Tsuyosa?
The movement. Caliber 8310 replaces caliber 8210, taking the power reserve from about 40 hours to 60. This reference also adds a sapphire caseback so you can see the movement, and a two-tone case and bracelet, both genuine differences, not just a new dial colour.
Can you swim or shower with the Tsuyosa 60?
Showering, yes, briefly. It’s rated 50m (5 bar), which most sources treat as fine for rain and incidental splashes but not for swimming or diving, despite the number sounding generous.
Who is this watch sold by on Amazon.ie?
A third-party marketplace seller, uhrenonline24, rather than Amazon itself. Stock was down to 2 units at time of writing, so check current availability before counting on it.
Is there an established track record for this exact watch?
Not yet. This reference is part of Citizen’s Autumn 2025 Tsuyosa 60 launch, reported at the time by Notebookcheck, and no owner reviews currently exist for it anywhere online.
- Caliber 8310 and 60 hour reserve are genuine, confirmed upgrades over the standard Tsuyosa
- No owner track record yet, and sold through a marketplace seller with limited stock
The Tsuyosa 60 earns its higher price with a real mechanical upgrade: caliber 8310’s 60 hour reserve is a genuine improvement over the standard Tsuyosa’s 40, and sapphire glass front and back is a real step up from mineral crystal. What buyers are trading for that is an unproven track record and a purchase through a marketplace seller rather than Amazon directly. If the standard Tsuyosa’s 40 hours and lower price cover your needs, that’s the safer, more proven buy. If the longer reserve and sapphire caseback matter to you, this is a considered upgrade, not a gimmick.