Voutilainen 28TAi (Inverse)
Archive · used only
The Voutilainen 28TAi (Inverse) was a 39 mm tantalum dress watch with a Voutilainen Calibre 28 inverse hand-wound movement. It is no longer made, so this page is a reference for buying one used.
No photos yet · reader photos welcome
Material
Tantalum
Grade / type
Tantalum
Water resistance
30 m
- Type
- Dress
- Price
- – · bespoke
- Case diameter
- 39.0 mm
- Thickness
- 13.4 mm
- Lug-to-lug
- 49 mm
- Origin
- Switzerland
- Movement
- Manual, inverted in-house calibre (direct impulse, two escape wheels)
- Caliber
- Voutilainen Calibre 28 inverse (28i)
- Power reserve
- 65 hours
- Complications
- Power reserve
- Colour
- Grey
- Construction
- Assembled
- Finish technology
- Natural finish
- Caseback
- Sapphire
- Nickel-free
- Unconfirmed (bracelet, strap, or clasp hardware not confirmed)
- Bracelet / strap
- Grained leather strap, Voutilainen tantalum pin buckle
- Crystal
- Sapphire front and back
- Display back
- Yes
- Dial
- Inverted movement display, brushed light blue minute chapter
- Dial colours
- Blue
- Availability
- No longer offered
- Status
- Archive (10 pieces, sold out)
- Not published
- Reference, Weight, Hardness, Surface treatment, Matching bracelet, Lume
Medium confidence
Verified Sep 2026
Source: Voutilainen (maker) / A Collected Man
Spec checksCase material Jul 2026
Facts are free to cite with a link.
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Frequently asked questions
What is the case of the Voutilainen 28TAi (Inverse) made of?
The case is tantalum. The guide has not yet confirmed it on the maker's own page. The caseback is sapphire.
What size is the Voutilainen 28TAi (Inverse)?
The case is 39 mm across, 13.4 mm thick and 49 mm from lug to lug. It is water resistant to 30 m.
How much does the Voutilainen 28TAi (Inverse) cost, and is it available?
It is no longer made, so the only way to buy one is used.
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