Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Oblvlo JM Tourbillon?

At MSRP the Oblvlo JM Tourbillon is the cheaper of the two at $516, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,252 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Oblvlo JM Tourbillon?

The Oblvlo JM Tourbillon wears larger at 42mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 3mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Oblvlo JM Tourbillon?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 50m for the Oblvlo JM Tourbillon.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Oblvlo JM Tourbillon?

The Oblvlo JM Tourbillon carries a 65-hour power reserve against 42 hours on the Serica Ref. 5303 Diving Chronometer.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Oblvlo JM Tourbillon?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Oblvlo JM Tourbillon uses the OBL.8024.

Side by side

Serica Ref. 5303 Diving ChronometervsOblvlo JM Tourbillon

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

Oblvlo JM Tourbillon

JM-TB

MSRP $516

At a glance

12 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

JM Tourbillon42mm

Power Reserve

Ref. 5303 Diving Chronometer42h

JM Tourbillon65h

Water Resistance

Ref. 5303 Diving Chronometer300m

JM Tourbillon50m

MSRP

Ref. 5303 Diving Chronometer$1,768

JM Tourbillon$516

Full specifications

Case

5 specs

Crystal & Dial

2 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

Black

Movement

4 specs

Caliber

M100 COSC

OBL.8024

Power Reserve

42h

65h

Jewels

Complications

COSC

Tourbillon

Pricing

1 specs

MSRP

$1,768

$516

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