Which is cheaper, the Decima Gatekeeper or the Phoibos Reef Master?

At MSRP the Phoibos Reef Master is the cheaper of the two at $335, against $599 for the Decima Gatekeeper — a $264 gap before any retailer discounting.

Which is bigger, the Decima Gatekeeper or the Phoibos Reef Master?

The Phoibos Reef Master wears larger at 42mm versus 38mm for the Decima Gatekeeper — a 4mm difference across the dial.

Which has better water resistance, the Decima Gatekeeper or the Phoibos Reef Master?

The Phoibos Reef Master is rated to 200m versus 50m for the Decima Gatekeeper.

Which has a longer power reserve, the Decima Gatekeeper or the Phoibos Reef Master?

The Decima Gatekeeper carries a 42-hour power reserve against 40 hours on the Phoibos Reef Master.

What movement does the Decima Gatekeeper run compared to the Phoibos Reef Master?

Both watches run automatic movements — the Decima Gatekeeper uses the Miyota 9039 and the Phoibos Reef Master uses the SII NH38.

Side by side

Decima GatekeepervsPhoibos Reef Master

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

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Decima Gatekeeper

gatekeeper-white

MSRP $599

Phoibos Reef Master

phoibos-reef-master-200m-automatic-diver-watch-py047a-shamrock-green

MSRP $335

At a glance

11 of 29 specs differ

Diameter

Gatekeeper38mm

Reef Master42mm

Power Reserve

Gatekeeper42h

Reef Master40h

Water Resistance

Gatekeeper50m

Reef Master200m

MSRP

Gatekeeper$599

Reef Master$335

Full specifications

Case

6 specs

Crystal & Dial

2 specs

Dial Color

White

Green

Lume

None

Super-LumiNova

Movement

2 specs

Caliber

Miyota 9039

SII NH38

Power Reserve

42h

40h

Pricing

1 specs

MSRP

$599

$335

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Decima GatekeepervsPhoibos Reef Master

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