Side by side

Serica Ref. 5303 Diving ChronometervsSpinnaker Hass Automatic

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
Hass Automatic
SpinnakerHass Automatic
MSRP $445

At a glance

12 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Hass Automatic43mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Hass Automatic40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Hass Automatic300m
MSRP
Ref. 5303 Diving Chronometer$1,768
Hass Automatic$445

Full specifications

Case

5 specs
Diameter
39mm
43mm
Thickness
12.2mm
16.5mm
Lug-to-Lug
46.5mm
50mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

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

Movement

3 specs
Caliber
M100 COSC
SII NH35A
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$445

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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.

Spinnaker Hass Automatic

The Spinnaker Hass Automatic is a 43mm watch featuring an NH35 movement and sapphire crystal, with owners highlighting its beautiful dial. Some find Spinnaker watches, including this model, to be on the thicker side, with one owner describing the Hass X MCS Blue Fade variant as comically large and chunky. The Spinnaker Hass Automatic was offered at $445 USD as part of a special collection with customized elements, and a limited edition of 200 pieces was also available for $195 shipped. On balance, owners and reviewers note the attractive dial as a key positive, though some express reservations about the watch's thickness.

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