Side by side

Serica Ref. 5303 Diving ChronometervsPinion Pure Bronze

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
Pure Bronze
PinionPure Bronze
MSRP $1,715

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Pure Bronze38mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Pure Bronze45h
Water Resistance
Ref. 5303 Diving Chronometer300m
Pure Bronze100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Pure Bronze$1,715

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
39mm
38mm
Thickness
12.2mm
11mm
Lug-to-Lug
46.5mm
44mm
Lug Width
20mm
20mm
Material
Stainless Steel
Bronze
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
Enamel Black
Black

Movement

4 specs
Caliber
M100 COSC
Sellita SW261-1
Type
Automatic
Manual
Power Reserve
42h
45h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$1,715

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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.

Pinion Pure Bronze

The Pinion Pure Bronze is lauded for its refreshing design, featuring a beautiful layered dial with applied numerals and luminous indexes. Reviewers praise its satisfying manual-winding action from the Unitas 6498 movement, which offers a 45-hour power reserve. One reviewer suggested a satin finish for the crown to match the case back and buckle. Overall, reviewers rate the Pinion Pure Bronze highly for its unique bronze case that patinates over time and its clear, subtly finished dial.

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