Which is cheaper, the Lum-Tec 39mm Combat B74 GMT or the Undone Ronin Automatic?

At MSRP the Undone Ronin Automatic is the cheaper of the two at $380, against $931 for the Lum-Tec 39mm Combat B74 GMT — a $551 gap before any retailer discounting.

Which is bigger, the Lum-Tec 39mm Combat B74 GMT or the Undone Ronin Automatic?

The Undone Ronin Automatic wears larger at 40mm versus 39mm for the Lum-Tec 39mm Combat B74 GMT — a 1mm difference across the dial.

Which has better water resistance, the Lum-Tec 39mm Combat B74 GMT or the Undone Ronin Automatic?

The Lum-Tec 39mm Combat B74 GMT is rated to 200m versus 100m for the Undone Ronin Automatic.

What movement does the Lum-Tec 39mm Combat B74 GMT run compared to the Undone Ronin Automatic?

Both watches run automatic movements — the Lum-Tec 39mm Combat B74 GMT uses the Miyota 9075 and the Undone Ronin Automatic uses the Seiko NH35.

Side by side

Lum-Tec 39mm Combat B74 GMTvsUndone Ronin Automatic

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

Add a watch

Lum-Tec 39mm Combat B74 GMT

MSRP $931

See the full 39mm Combat B74 GMT

Undone Ronin Automatic

MSRP $380

See the full Ronin Automatic

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At a glance

8 of 29 specs differ

Diameter

39mm Combat B74 GMT39mm

Ronin Automatic40mm

Power Reserve

39mm Combat B74 GMT—

Ronin Automatic—

Water Resistance

39mm Combat B74 GMT200m

Ronin Automatic100m

MSRP

39mm Combat B74 GMT$931

Ronin Automatic$380

Full specifications

Case

4 specs

Diameter

39mm

40mm

Lug-to-Lug

46mm

0mm

Lug Width

20mm

0mm

Water Resistance

200m

100m

Crystal & Dial

1 specs

Crystal

Sapphire

—

Movement

2 specs

Caliber

Miyota 9075

Seiko NH35

Power Reserve

—

Pricing

1 specs

MSRP

$931

$380

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