Side by side

Serica Ref. 5303 Diving ChronometervsTudor Pelagos FXD

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

Ref. 5303 Diving Chronometer
SericaRef. 5303 Diving Chronometer
MSRP $1,768
Pelagos FXD
TudorPelagos FXD
MSRP $5,025

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Pelagos FXD42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Pelagos FXD70h
Water Resistance
Ref. 5303 Diving Chronometer300m
Pelagos FXD200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Pelagos FXD$5,025

Full specifications

Case

7 specs
Diameter
39mm
42mm
Thickness
12.2mm
12.8mm
Lug-to-Lug
46.5mm
46mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Finish
Brushed and polished
Brushed + Satin
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Blue
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
M100 COSC
MT5602
Power Reserve
42h
70h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$5,025

Follow this matchup

Get a note when Serica Ref. 5303 Diving Chronometer vs Tudor Pelagos FXD gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Serica Ref. 5303 Diving Chronometer

Owners widely praise the Serica Ref. 5303 Diving Chronometer for its excellent wearability, definitive style, and smooth, confident bezel action. The dual scale on the bezel is noted as surprisingly useful, and the crown action, winding, and hacking are reported to work perfectly. One owner describes the Serica 5303-3 as gorgeous and unique, though another notes the crown can appear comically large. On balance, owners rate the Serica Ref. 5303 Diving Chronometer highly for its blend of unique design and robust functionality.

Tudor Pelagos FXD

Owners and reviewers widely praise the Tudor Pelagos FXD for its comfortable, lightweight titanium build, excellent legibility underwater, and robust, functional design inspired by military specifications. Its amazing lume, tactile bezel, and quick strap changes are frequently highlighted as key strengths, making it a versatile and reliable tool watch for everyday wear. Some owners note the fixed strap bars and hook-and-loop strap can be less practical for certain clothing, and one review mentions concerns about the longevity of the carbon composite case variant. Accuracy figures range, with some reporting COSC-certified precision while others note less consistent timekeeping requiring frequent servicing. Overall, owners and reviewers rate the Tudor Pelagos FXD highly for its ruggedness, historical connection, and purposeful design at its price point.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.