Side by side
Serica Ref. 5303 Diving ChronometervsStraton Straton Syncro MKII Mechanical Chrono
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
20 of 29 specs differDiameter
Ref. 5303 Diving Chronometer39mm
Straton Syncro MKII Mechanical Chrono40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Straton Syncro MKII Mechanical Chrono—
Water Resistance
Ref. 5303 Diving Chronometer300m
Straton Syncro MKII Mechanical Chrono100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Straton Syncro MKII Mechanical Chrono$599
Full specifications
Case
8 specsCategory
Diver
Chronograph
Diameter
39mm
40mm
Thickness
12.2mm
12.4mm
Lug-to-Lug
46.5mm
48mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
—
Water Resistance
300m
100m
Caseback
Solid
Sapphire crystal
Crystal & Dial
5 specsCrystal Shape
Flat
Domed
AR Coating
Yes
Underside
Dial Color
Enamel Black
—
Indices
Applied
—
Lume
Super-LumiNova
None
Movement
6 specsCaliber
M100 COSC
Seagull ST19
Type
Automatic
Manual
Beat Rate
28,800 vph
0 vph
Power Reserve
42h
0h
Jewels
25
0
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
$599
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