Side by side

Serica Ref. 5303 Diving ChronometervsRZE Endeavour

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
Endeavour
RZEEndeavour
MSRP $599

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Endeavour41mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Endeavour40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Endeavour100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Endeavour$599

Full specifications

Case

6 specs
Category
Diver
Sport
Diameter
39mm
41mm
Thickness
12.2mm
12.5mm
Lug-to-Lug
46.5mm
46mm
Material
Stainless Steel
Grade 5 Titanium
Water Resistance
300m
100m

Crystal & Dial

3 specs
AR Coating
Yes
Underside
Dial Color
Enamel Black
Grey
Lume
Super-LumiNova
Super-LumiNova C3

Movement

3 specs
Caliber
M100 COSC
Miyota 9039
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$599

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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.

RZE Endeavour

The RZE Endeavour is widely praised for its exceptionally lightweight and comfortable titanium case, enhanced by an ULTRAHex coating for durability. Owners and reviewers highlight its striking dial, excellent lume, and the practical inclusion of a toolless adjustable clasp. The watch is noted for reliable timekeeping, with accuracy reported between +1 and +6 seconds per day. Some find the hands and indices slim, and one owner desired better contrast on the bezel's zero marker. The RZE Endeavour offers a value proposition with its 200m water resistance and Seiko NH38A movement. Overall, owners and reviewers highly rate the RZE Endeavour for its comfortable, lightweight titanium build and vibrant dial options.

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