Side by side

Serica Ref. 5303 Diving ChronometervsTudor Monarch

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
Monarch
TudorMonarch
MSRP $5,875

At a glance

18 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Monarch39mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Monarch65h
Water Resistance
Ref. 5303 Diving Chronometer300m
Monarch100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Monarch$5,875

Full specifications

Case

6 specs
Category
Diver
Thickness
12.2mm
11.9mm
Lug-to-Lug
46.5mm
46mm
Finish
Brushed and polished
Polished + Satin
Water Resistance
300m
100m
Caseback
Solid
Solid screw-down

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Yes
Dial Color
Enamel Black
Champagne
Lume
Super-LumiNova
None

Movement

7 specs
Caliber
M100 COSC
MT5662-2U
Beat Rate
28,800 vph
0 vph
Power Reserve
42h
65h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$5,875

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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 Monarch

The Tudor Monarch is praised for its crisp case finishing, solid H-link bracelet with T-fit clasp, and a 39mm size that wears well, though its eclectic neoclassical dial design is noted. It features a METAS-certified Master Chronometer movement with a 65-hour power reserve, visible through a display case back. The watch has a vintage-inspired dial with a unique champagne color and California layout, though it lacks lume and its modern, angular 39mm case doesn't wear smaller than its dimensions suggest. Its 11.9mm thickness is noted as a bit disappointing, but faceted case sides and box sapphire crystals contribute to a slender wearing experience. On balance, reviewers praise the Tudor Monarch for its sharp case finishing and Master Chronometer movement at its price point.

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