Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Boldr The T Rex By Boldr X Nitecore?

At MSRP the Boldr The T Rex By Boldr X Nitecore is the cheaper of the two at $499, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,269 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Boldr The T Rex By Boldr X Nitecore?

The Boldr The T Rex By Boldr X Nitecore wears larger at 40mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 1mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Boldr The T Rex By Boldr X Nitecore?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 200m for the Boldr The T Rex By Boldr X Nitecore.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Boldr The T Rex By Boldr X Nitecore?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 40 hours on the Boldr The T Rex By Boldr X Nitecore.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Boldr The T Rex By Boldr X Nitecore?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Boldr The T Rex By Boldr X Nitecore uses the Seiko NH35A.

Side by side

Serica Ref. 5303 Diving ChronometervsBoldr The T Rex By Boldr X Nitecore

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

Boldr The T Rex By Boldr X Nitecore

the-t-rex-by-boldr-x-nitecore

MSRP $499

At a glance

9 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

The T Rex By Boldr X Nitecore40mm

Power Reserve

Ref. 5303 Diving Chronometer42h

The T Rex By Boldr X Nitecore40h

Water Resistance

Ref. 5303 Diving Chronometer300m

The T Rex By Boldr X Nitecore200m

MSRP

Ref. 5303 Diving Chronometer$1,768

The T Rex By Boldr X Nitecore$499

Full specifications

Case

4 specs

Diameter

39mm

40mm

Thickness

12.2mm

12.3mm

Lug-to-Lug

46.5mm

46mm

Water Resistance

300m

200m

Crystal & Dial

1 specs

Dial Color

Enamel Black

T-Rex by BOLDR x Nitecore

Movement

3 specs

Caliber

M100 COSC

Seiko NH35A

Power Reserve

42h

40h

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$499

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