Side by side

Serica Ref. 5303 Diving ChronometervsChristopher Ward C60 Sapphire Edge

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
C60 Sapphire Edge
Christopher WardC60 Sapphire Edge
MSRP $1,640

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
C60 Sapphire Edge49.32mm
Power Reserve
Ref. 5303 Diving Chronometer42h
C60 Sapphire Edge56h
Water Resistance
Ref. 5303 Diving Chronometer300m
C60 Sapphire Edge300m
MSRP
Ref. 5303 Diving Chronometer$1,768
C60 Sapphire Edge$1,640

Full specifications

Case

6 specs
Diameter
39mm
49.32mm
Thickness
12.2mm
10.7mm
Lug-to-Lug
46.5mm
49.32mm
Lug Width
20mm
22mm
Finish
Brushed and polished
Brushed + Polished
Caseback
Solid
Display

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Blue
Lume
Super-LumiNova
SLN X1 GL C1

Movement

4 specs
Caliber
M100 COSC
SW200
Beat Rate
28,800 vph
4 vph
Power Reserve
42h
56h
Complications
COSC
Moonphase, Day-date, Date

Pricing

1 specs
MSRP
$1,768
$1,640

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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.

Christopher Ward C60 Sapphire Edge

Owners widely praise the Christopher Ward C60 Sapphire Edge for its innovative deep blue sapphire dial, which is considered superior to other transparent dial executions, and its slim, ergonomic 42mm case. The lumed rubber strap is also a frequently highlighted feature, contributing to the watch's homogeneous luminosity and "damn cool" aesthetic. The watch is noted for offering incredible value, with a Sellita SW300-1 movement providing a 56-hour power reserve and 60ATM water resistance. However, one owner reported the sapphire dial cracked from the inside during regular use, and the brand denied warranty repair for this issue. Overall, owners and reviewers rate the Christopher Ward C60 Sapphire Edge highly for its striking dial execution and innovative features at its price point.

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