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Serica Ref. 5303 Diving ChronometervsAevig Thule GMT

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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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.

Aevig Thule GMT

Owners widely praise the Aevig Thule GMT for its 70s-inspired design, lightweight titanium case with a hardness coating, and the accurate NH34 movement running at 1-2 seconds fast per day. The watch also features fantastic AR coating, a quick-release bracelet, and excellent customer service. Some wish for sharper case angles and polished details to enhance its dressier appeal, and macro photos suggest potential irregularities on the hour markers. Overall, owners rate the Aevig Thule GMT highly for its vintage charm and practical features at an affordable price.

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Thule GMT39mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Thule GMT70h
Water Resistance
Ref. 5303 Diving Chronometer300m
Thule GMT100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Thule GMT$755

Full specifications

Case

6 specs
Category
Diver
GMT
Thickness
12.2mm
12.3mm
Lug-to-Lug
46.5mm
48.5mm
Lug Width
0mm
20mm
Material
Stainless Steel
Titanium
Water Resistance
300m
100m

Crystal & Dial

3 specs
AR Coating
Yes
Dial Color
Enamel Black
Lume
Super-LumiNova
Superluminova

Movement

3 specs
Caliber
Soprod M100
Seiko NH34
Power Reserve
42h
70h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$755
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