Side by side

Serica Ref. 5303 Diving ChronometervsGeckota Classic Chronotimer

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
Classic Chronotimer
GeckotaClassic Chronotimer
MSRP $499

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Classic Chronotimer41.5mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Classic Chronotimer40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Classic Chronotimer100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Classic Chronotimer$499

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
39mm
41.5mm
Thickness
12.2mm
12.35mm
Lug-to-Lug
46.5mm
47.8mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Grey
Lume
Super-LumiNova
None

Movement

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

Pricing

1 specs
MSRP
$1,768
$499

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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.

Geckota Classic Chronotimer

Owners widely praise the Geckota Classic Chronotimer for its appealing and distinct yet classic design, with many receiving compliments on its unique look. Enthusiasts highlight the hand-wound mechanical movement as a positive feature, noting the movements appear to be solid workhorses. Some owners find the Geckota Classic Chronotimer comfortable and fun to wear, appreciating its funky aesthetic and how well it contrasts with different straps. However, one owner reports the Chronotimer wears large on smaller wrists. Overall, owners rate the Geckota Classic Chronotimer highly for its beautiful and distinct design that garners frequent compliments.

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