Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Lum-Tec M94 Bronze?

At MSRP the Lum-Tec M94 Bronze is the cheaper of the two at $999, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $769 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Lum-Tec M94 Bronze?

The Lum-Tec M94 Bronze wears larger at 44mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 5mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Lum-Tec M94 Bronze?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 200m for the Lum-Tec M94 Bronze.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Lum-Tec M94 Bronze?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 40 hours on the Lum-Tec M94 Bronze.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Lum-Tec M94 Bronze?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Lum-Tec M94 Bronze uses the Miyota 9075.

Side by side

Serica Ref. 5303 Diving ChronometervsLum-Tec M94 Bronze

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

Serica Ref. 5303 Diving Chronometer

5303-1-diving-chronometer

MSRP $1,768

Lum-Tec M94 Bronze

m94d-bronze-pre-order

MSRP $999

At a glance

15 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

M94 Bronze44mm

Power Reserve

Ref. 5303 Diving Chronometer42h

M94 Bronze40h

Water Resistance

Ref. 5303 Diving Chronometer300m

M94 Bronze200m

MSRP

Ref. 5303 Diving Chronometer$1,768

M94 Bronze$999

Full specifications

Case

7 specs

Crystal & Dial

4 specs

Crystal

Sapphire

Domed Sapphire

AR Coating

Yes

Inner

Dial Color

Enamel Black

Bronze

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

M100 COSC

Miyota 9075

Power Reserve

42h

40h

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$999

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