Side by side

Serica Ref. 5303 Diving ChronometervsStraton Straton Speciale Automatic or Quartz watch

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
Straton Speciale Automatic or Quartz watch
StratonStraton Speciale Automatic or Quartz watch
MSRP $599

At a glance

21 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Straton Speciale Automatic or Quartz watch42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Straton Speciale Automatic or Quartz watch
Water Resistance
Ref. 5303 Diving Chronometer300m
Straton Speciale Automatic or Quartz watch100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Straton Speciale Automatic or Quartz watch$599

Full specifications

Case

9 specs
Category
Diver
Chronograph
Diameter
39mm
42mm
Thickness
12.2mm
15.9mm
Lug-to-Lug
46.5mm
40.8mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
300m
100m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
Domed
AR Coating
Yes
Dial Color
Enamel Black
Indices
Applied
Lume
Super-LumiNova
None

Movement

6 specs
Caliber
M100 COSC
Valjoux ETA7750
Type
Automatic
Quartz
Beat Rate
28,800 vph
0 vph
Power Reserve
42h
0h
Jewels
25
0
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$599

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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.

Straton Speciale Automatic or Quartz watch

Owners widely praise the Straton Speciale Automatic or Quartz watch for its great retro feel, TV-shaped case, and fun color combinations. The automatic version is reported to be accurate at approximately +2 seconds per day. The meca-quartz model starts at $320, while the automatic is around $800 with a bracelet, both featuring a 40.8mm lug-to-lug measurement for wearability. Owners consider the quartz version reasonably priced, with its value linked to its mechanical movement. Overall, owners rate the Straton Speciale Automatic or Quartz watch highly for its retro aesthetic and wearability at its price point.

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