Which is cheaper, the Oblvlo BLM ZB or the Undone Tachikoma?

At MSRP the Oblvlo BLM ZB is the cheaper of the two at $315, against $320 for the Undone Tachikoma — a $5 gap before any retailer discounting.

Which is bigger, the Oblvlo BLM ZB or the Undone Tachikoma?

The Undone Tachikoma wears larger at 41.8mm versus 41mm for the Oblvlo BLM ZB — a 0.8mm difference across the dial.

Which has better water resistance, the Oblvlo BLM ZB or the Undone Tachikoma?

The Undone Tachikoma is rated to 100m versus 50m for the Oblvlo BLM ZB.

What movement does the Oblvlo BLM ZB run compared to the Undone Tachikoma?

The Oblvlo BLM ZB runs a automatic caliber, while the Undone Tachikoma runs a quartz (Seiko VK63).

Side by side

Oblvlo BLM ZBvsUndone Tachikoma

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

MSRP $315

MSRP $320

See the full Tachikoma

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At a glance

9 of 29 specs differ

Diameter

BLM ZB41mm

Tachikoma41.8mm

Power Reserve

BLM ZB—

Tachikoma—

Water Resistance

BLM ZB50m

Tachikoma100m

MSRP

BLM ZB$315

Tachikoma$320

Full specifications

Case

4 specs

Crystal & Dial

2 specs

Dial Color

—

Lume

Super-LumiNova

None

Movement

2 specs

Caliber

—

Seiko VK63

Type

Automatic

Quartz

Pricing

1 specs

MSRP

$315

$320

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Oblvlo BLM ZBvsUndone Tachikoma

At a glance

Full specifications

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