Citizen The Citizen Caliber 0100 (Super Titanium)
The Caliber 0100 is Citizen's showpiece: a light-powered quartz movement that Citizen calls the most accurate of its kind in the world, rated to within a second a year. This was the 500-piece limited edition in Super Titanium, Citizen's titanium hardened at the surface with its Duratect treatment, with a black dial, no date and a matching bracelet. The case is 38 mm across, the whole watch weighs 65 g, and a sapphire caseback shows the movement. Citizen lists every part that touches the skin as non-steel, so the guide marks it nickel-free. It is sold out on Citizen's own US store and no longer made, so the way to get one now is used. It listed at $7,400.
Written 28 September 2026 from Citizen's US product page.
- Reference
- AQ6021-51E
- Type
- Dress
- Case diameter
- 38.0 mm
- Origin
- Japan
- Movement
- Eco-Drive light-powered, annual accuracy +/-1 s/yr
- Caliber
- Citizen Caliber 0100
- Complications
- Time only
- Colour
- Grey
- Surface treatment
- Duratect surface hardening
- Finish technology
- Surface hardening
- Caseback
- Sapphire
- Nickel-free
- Maker states none
- Bracelet / strap
- Super Titanium bracelet
- Matching bracelet
- Standard
- Crystal
- Sapphire, AR coated
- Display back
- Yes
- Dial
- Black
- Dial colours
- Black
- Availability
- No longer offered
- Status
- No longer offered; a 500-piece limited edition, now sold out on Citizen's own US store (the page is still listed but not orderable)
- Not published
- Thickness, Lug-to-lug, Power reserve, Hardness, Construction, Lume
Head to head: The Citizen Caliber 0100 (Super Titanium) vs Ming 19.01 (titanium) →
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Frequently asked questions
Is the The Citizen Caliber 0100 (Super Titanium) nickel-free?
On the maker's published specification, nothing that touches the skin is steel: the case, caseback, crown and bracelet with its clasp are all non-steel. The guide records what the maker publishes and has not tested the watch, so if you react to nickel, confirm the contact points with the maker before buying.
What grade of titanium is the The Citizen Caliber 0100 (Super Titanium)?
The maker confirms titanium but does not publish a grade. The maker calls the material Super Titanium. The caseback is sapphire.
What size is the The Citizen Caliber 0100 (Super Titanium)?
The case is 38 mm across. It is water resistant to 50 m.
How much does the The Citizen Caliber 0100 (Super Titanium) weigh?
About 65 g.
How much does the The Citizen Caliber 0100 (Super Titanium) cost, and is it available?
It is no longer made, so the only way to buy one is used. Its list price when it was in production was $7,400.
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