Side by side

Serica Ref. 5303 Diving ChronometervsGlycine Airman GMT

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
Airman GMT
GlycineAirman GMT
MSRP $1,295

At a glance

20 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Airman GMT45mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Airman GMT
Water Resistance
Ref. 5303 Diving Chronometer300m
Airman GMT200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Airman GMT$1,295

Full specifications

Case

8 specs
Category
Diver
GMT
Diameter
39mm
45mm
Thickness
12.2mm
13mm
Lug-to-Lug
46.5mm
Lug Width
20mm
22mm
Finish
Brushed and polished
Water Resistance
300m
200m
Caseback
Solid

Crystal & Dial

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

Movement

6 specs
Caliber
M100 COSC
Type
Automatic
Quartz
Beat Rate
28,800 vph
Power Reserve
42h
Jewels
25
1
Complications
COSC
GMT

Pricing

1 specs
MSRP
$1,768
$1,295

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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.

Glycine Airman GMT

Owners widely appreciate the Glycine Airman GMT's ability to track three time zones with an easy-to-read dial layout. However, some owners find the GMT hand visually similar to the minute hand, suggesting a red paint for better distinction, a sentiment echoed by reviewers who note the thin, unlumed GMT hand can be hard to read against the black dial. One owner praises the 39mm sizing and 200m water resistance of a related model, noting its good build and finishing from when Glycine was independent. On balance, owners and reviewers find the Glycine Airman GMT offers practical multi-time zone tracking, though legibility of the GMT hand is a recurring point of discussion.

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