Side by side

Serica Ref. 5303 Diving ChronometervsPhoibos Voyager 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
Voyager GMT
PhoibosVoyager GMT
MSRP $429

At a glance

9 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Voyager GMT39mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Voyager GMT40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Voyager GMT100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Voyager GMT$429

Full specifications

Case

4 specs
Category
Diver
GMT
Thickness
12.2mm
13.2mm
Lug-to-Lug
46.5mm
45mm
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
Enamel Black
Red

Movement

3 specs
Caliber
M100 COSC
SII NH34
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$429

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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.

Phoibos Voyager GMT

Owners widely praise the Phoibos Voyager GMT for its exceptional fit and finish, attractive dials that play with light, and outstanding lume. The bezel action is described as perfect with a grippy, smooth-threaded crown, and the bracelet clasp is noted as high quality for the price. Accuracy varies, with one owner reporting +1/+2 seconds per day and another around -6 seconds per day. Some owners find the 14.5mm thickness chunky and difficult to wear with long sleeves, and the 24-click bezel limits tracking to hour-offset time zones. The date color can blend into the dial, and the date wheel may show slight misalignment. On balance, owners rate the Phoibos Voyager GMT highly for its vibrant dials and excellent value.

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