Side by side

Serica Ref. 5303 Diving ChronometervsTornek-Rayville CISO M38 Field

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
CISO M38 Field
Tornek-RayvilleCISO M38 Field
MSRP $695

At a glance

10 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
CISO M38 Field38mm
Power Reserve
Ref. 5303 Diving Chronometer42h
CISO M38 Field42h
Water Resistance
Ref. 5303 Diving Chronometer300m
CISO M38 Field100m
MSRP
Ref. 5303 Diving Chronometer$1,768
CISO M38 Field$695

Full specifications

Case

5 specs
Category
Diver
Diameter
39mm
38mm
Thickness
12.2mm
12.45mm
Lug-to-Lug
46.5mm
43.6mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Enamel Black
Black
Lume
Super-LumiNova
Superluminova

Movement

2 specs
Caliber
M100 COSC
TMI NH36
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$695

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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.

Tornek-Rayville CISO M38 Field

Owners widely report the Tornek-Rayville CISO M38 Field offers high overall quality with a comfortable bracelet featuring single-sided screw links. The watch exhibits minimal wear, with only hairline scratches and a faint, difficult-to-photograph bezel mark. On balance, owners value the Tornek-Rayville CISO M38 Field for its robust build and comfortable wearability.

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