Which is cheaper, the Lum-Tec Combat B72 or the Seiko 5KX?

At MSRP the Seiko 5KX is the cheaper of the two at $350, against $595 for the Lum-Tec Combat B72 — a $245 gap before any retailer discounting.

Which is bigger, the Lum-Tec Combat B72 or the Seiko 5KX?

The Lum-Tec Combat B72 wears larger at 43mm versus 42.5mm for the Seiko 5KX — a 0.5mm difference across the dial.

Which has better water resistance, the Lum-Tec Combat B72 or the Seiko 5KX?

The Lum-Tec Combat B72 is rated to 200m versus 10m for the Seiko 5KX.

Which has a longer power reserve, the Lum-Tec Combat B72 or the Seiko 5KX?

The Seiko 5KX carries a 41-hour power reserve against 40 hours on the Lum-Tec Combat B72.

What movement does the Lum-Tec Combat B72 run compared to the Seiko 5KX?

Both watches run automatic movements — the Lum-Tec Combat B72 uses the Ronda 515 and the Seiko 5KX uses the Seiko 4R36.

Side by side

Lum-Tec Combat B72vsSeiko 5KX

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

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Lum-Tec Combat B72

combat-b72

MSRP $595

See the full Combat B72

Seiko 5KX

srpd51

MSRP $350

At a glance

12 of 29 specs differ

Diameter

Combat B7243mm

5KX42.5mm

Power Reserve

Combat B7240h

5KX41h

Water Resistance

Combat B72200m

5KX100m

MSRP

Combat B72$595

5KX$350

Full specifications

Case

5 specs

Crystal & Dial

3 specs

Crystal

Sapphire

Hardlex

Dial Color

—

Black

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Ronda 515

Seiko 4R36

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$595

$350

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Lum-Tec Combat B72vsSeiko 5KX

At a glance

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