Side by side

Serica Ref. 5303 Diving ChronometervsGruppo Gamma Field III GMT Date

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 III GMT Date
Gruppo GammaField III GMT Date
MSRP $459

At a glance

11 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Field III GMT Date40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Field III GMT Date41h
Water Resistance
Ref. 5303 Diving Chronometer300m
Field III GMT Date200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Field III GMT Date$459

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
39mm
40mm
Thickness
12.2mm
14mm
Lug-to-Lug
46.5mm
48.5mm
Lug Width
20mm
22mm
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Enamel Black
Black

Movement

3 specs
Caliber
M100 COSC
Seiko Instruments NH38A
Power Reserve
42h
41h
Complications
COSC
GMT, Date

Pricing

1 specs
MSRP
$1,768
$459

Follow this matchup

Get a note when Serica Ref. 5303 Diving Chronometer vs Gruppo Gamma Field III GMT Date gets more votes, a community discussion, or a price drop. No account needed.

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.

Gruppo Gamma Field III GMT Date

Owners widely praise the Gruppo Gamma Field III GMT Date for its awesome looks, quality, and good value. The watch features a 40mm brushed 316L stainless steel case, box sapphire crystal, and 200m water resistance, powered by a Seiko NH34A movement. Some reviewers note the NH34A movement's accuracy can range from -20~+40 seconds per day, though one reviewer reported +5 seconds per day with a regulated movement. The dial's dense layout with Arabic numerals can be overwhelming for some, and one owner found the size unsuitable for smaller wrists. On balance, owners rate the Gruppo Gamma Field III GMT Date highly for its impressive finishing and toolish design at its price point.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.