Which is cheaper, the Lum-Tec Combat B71 or the Noctua Watch Corp. Sentinel?

At MSRP the Noctua Watch Corp. Sentinel is the cheaper of the two at $429, against $595 for the Lum-Tec Combat B71 — a $166 gap before any retailer discounting.

Which is bigger, the Lum-Tec Combat B71 or the Noctua Watch Corp. Sentinel?

The Lum-Tec Combat B71 wears larger at 43mm versus 42mm for the Noctua Watch Corp. Sentinel — a 1mm difference across the dial.

Which has better water resistance, the Lum-Tec Combat B71 or the Noctua Watch Corp. Sentinel?

The Noctua Watch Corp. Sentinel is rated to 300m versus 200m for the Lum-Tec Combat B71.

What movement does the Lum-Tec Combat B71 run compared to the Noctua Watch Corp. Sentinel?

Both watches run automatic movements — the Lum-Tec Combat B71 uses the Ronda 515 and the Noctua Watch Corp. Sentinel uses the Seiko NH35.

Side by side

Lum-Tec Combat B71vsNoctua Watch Corp. Sentinel

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

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Lum-Tec Combat B71

MSRP $595

See the full Combat B71

Noctua Watch Corp.Sentinel

MSRP $429

See the full Sentinel

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At a glance

7 of 29 specs differ

Diameter

Combat B7143mm

Sentinel42mm

Power Reserve

Combat B71—

Sentinel—

Water Resistance

Combat B71200m

Sentinel300m

MSRP

Combat B71$595

Sentinel$429

Full specifications

Case

4 specs

Diameter

43mm

42mm

Thickness

13.6mm

15mm

Lug-to-Lug

51.5mm

46mm

Water Resistance

200m

300m

Movement

2 specs

Caliber

Ronda 515

Seiko NH35

Power Reserve

—

Pricing

1 specs

MSRP

$595

$429

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Lum-Tec Combat B71vsNoctua Watch Corp. Sentinel

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