Side by side

Serica Ref. 5303 Diving ChronometervsFormex Field Automatic

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
Field Automatic
FormexField Automatic
MSRP $881
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.

Formex Field Automatic

Owners widely praise the Formex Field Automatic for its lightweight, scratch-resistant Grade 2 titanium case with a hardening treatment and its comfortable wearability, especially with quick-release straps and a carbon clasp. Reviewers and owners alike highlight the dial's legibility and depth, with one noting the Petrol Blue's great color and subtle texture. The Sellita SW200-1 movement is considered a practical choice, with one owner reporting accuracy of +1 second per day. The watch offers 150m water resistance and is seen as good value under $1000. Some owners desire a matching titanium bracelet and find the numeral typography less appealing. Overall, owners and reviewers rate the Formex Field Automatic highly for its robust, comfortable titanium construction and functional dial design at its price point.

At a glance

12 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Field Automatic40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Field Automatic41h
Water Resistance
Ref. 5303 Diving Chronometer300m
Field Automatic150m
MSRP
Ref. 5303 Diving Chronometer$1,768
Field Automatic$881

Full specifications

Case

6 specs
Category
Diver
Field
Diameter
39mm
40mm
Thickness
12.2mm
10.6mm
Lug-to-Lug
46.5mm
46.6mm
Material
Stainless Steel
Titanium
Water Resistance
300m
150m

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Ash Grey

Movement

3 specs
Caliber
M100 COSC
Sellita SW200-1
Power Reserve
42h
41h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$881
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