Side by side

Serica Ref. 5303 Diving ChronometervsGeckota Chronotimer Sports Edition

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
Chronotimer Sports Edition
GeckotaChronotimer Sports Edition
MSRP $499

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Chronotimer Sports Edition41.5mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Chronotimer Sports Edition40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Chronotimer Sports Edition100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Chronotimer Sports Edition$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
Maroon
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 Chronotimer Sports Edition

The Geckota Maroon Red strap is considered decent with good colors by one owner, but the red stripes are too thick and the lines are too close together, and it is also noted as being too long with "meh" colors compared to other options. On balance, owners and reviewers find the Geckota Maroon Red strap to be a functional accessory with some aesthetic drawbacks.

From video reviewers

The polished and brushed steel case finishing is a shared strength. The hand-wound mechanical chronograph movement is also a consistent point. No shared weaknesses were identified.

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