Side by side

Serica Ref. 5303 Diving ChronometervsHelgray Le Mans (Legend Rose Gold)

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
Le Mans (Legend Rose Gold)
HelgrayLe Mans (Legend Rose Gold)
MSRP $299

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Le Mans (Legend Rose Gold)42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Le Mans (Legend Rose Gold)40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Le Mans (Legend Rose Gold)100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Le Mans (Legend Rose Gold)$299

Full specifications

Case

5 specs
Category
Diver
Chronograph
Diameter
39mm
42mm
Thickness
12.2mm
12mm
Lug-to-Lug
46.5mm
46mm
Water Resistance
300m
100m

Crystal & Dial

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

Movement

4 specs
Caliber
M100 COSC
Type
Type
Automatic
Quartz
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$299

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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.

Helgray Le Mans (Legend Rose Gold)

Owners widely praise the Helgray Le Mans (Legend Rose Gold) for its stylish design, excellent fit and finish, and a standout dial with copper-inset hour markers, all at a competitive price. One owner notes the crown action feels a bit mushy, and the included strap is considered too soft, though swapping to a leather NATO improved wearability for another. On balance, owners rate the Helgray Le Mans (Legend Rose Gold) highly for its attractive dial and overall build quality for the price.

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