Side by side

Serica Ref. 5303 Diving ChronometervsHorage Autark K2 Small Seconds

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
Autark K2 Small Seconds
HorageAutark K2 Small Seconds
MSRP $5,590

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Autark K2 Small Seconds39.5mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Autark K2 Small Seconds72h
Water Resistance
Ref. 5303 Diving Chronometer300m
Autark K2 Small Seconds100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Autark K2 Small Seconds$5,590

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
39mm
39.5mm
Thickness
12.2mm
8.8mm
Lug-to-Lug
46.5mm
48.3mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Yes
No
Dial Color
Enamel Black
Black

Movement

3 specs
Caliber
M100 COSC
Horage K2
Power Reserve
42h
72h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$5,590

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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.

Horage Autark K2 Small Seconds

Owners and reviewers widely praise Horage's technical capabilities and enthusiast-driven approach, with one owner highlighting the brand's craftsmanship, reliability, and value. The Horage Autark K2 Small Seconds features a Grade 5 titanium case and bracelet praised for being lightweight and comfortable for daily wear, offering 100 meters of water resistance and a 72-hour power reserve. Accuracy is rated within -4/+6 seconds per day. On balance, owners and reviewers rate the Horage Autark K2 Small Seconds highly for its technical innovation and value proposition.

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