Which is cheaper, the Sternglas Sedius or the Undone Tachikoma?

At MSRP the Sternglas Sedius is the cheaper of the two at $301, against $320 for the Undone Tachikoma — a $19 gap before any retailer discounting.

Which is bigger, the Sternglas Sedius or the Undone Tachikoma?

The Undone Tachikoma wears larger at 41.8mm versus 40mm for the Sternglas Sedius — a 1.8mm difference across the dial.

Which has better water resistance, the Sternglas Sedius or the Undone Tachikoma?

The Undone Tachikoma is rated to 100m versus 50m for the Sternglas Sedius.

What movement does the Sternglas Sedius run compared to the Undone Tachikoma?

Both watches run quartz movements — the Sternglas Sedius uses the Seiko VH31 and the Undone Tachikoma uses the Seiko VK63.

Side by side

Sternglas SediusvsUndone Tachikoma

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

MSRP $301

MSRP $320

See the full Tachikoma

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At a glance

10 of 29 specs differ

Diameter

Sedius40mm

Tachikoma41.8mm

Power Reserve

Sedius—

Tachikoma—

Water Resistance

Sedius50m

Tachikoma100m

MSRP

Sedius$301

Tachikoma$320

Full specifications

Case

6 specs

Movement

3 specs

Caliber

Seiko VH31

Seiko VK63

Power Reserve

—

Jewels

—

Pricing

1 specs

MSRP

$301

$320

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Sternglas SediusvsUndone Tachikoma

At a glance

Full specifications

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