Side by side

Serica Ref. 5303 Diving ChronometervsChristopher Ward C65 Sandhurst Series 2

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
C65 Sandhurst Series 2
Christopher WardC65 Sandhurst Series 2
MSRP $1,375

At a glance

15 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
C65 Sandhurst Series 240mm
Power Reserve
Ref. 5303 Diving Chronometer42h
C65 Sandhurst Series 238h
Water Resistance
Ref. 5303 Diving Chronometer300m
C65 Sandhurst Series 2150m
MSRP
Ref. 5303 Diving Chronometer$1,768
C65 Sandhurst Series 2$1,375

Full specifications

Case

6 specs
Category
Diver
Diameter
39mm
40mm
Thickness
12.2mm
11.9mm
Lug-to-Lug
46.5mm
43.7mm
Finish
Brushed and polished
down backplate with deep-stamped British Army Heraldic badge
Water Resistance
300m
150m

Crystal & Dial

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

Movement

5 specs
Caliber
M100 COSC
SW200-1
Beat Rate
28,800 vph
4 vph
Power Reserve
42h
38h
Jewels
25
26
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$1,375

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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 C65 Sandhurst Series 2

Owners widely praise the Christopher Ward C65 Sandhurst Series 2 for its COSC-certified accuracy and clean British-military aesthetic, with many highlighting its balanced wearability and cool, ultra-legible mid-century design. The gorgeous domed crystal and the MOD badge on the caseback are noted as charming details. Some owners find the 38mm case size potentially too small for larger wrists, while others question its claimed military heritage. The watch is powered by a Sellita SW200 COSC movement with a 38-hour power reserve and features Grade X1 Super-LumiNova on its matte black dial. Overall, the consensus is that the Christopher Ward C65 Sandhurst Series 2 is highly regarded for its character and COSC-certified accuracy.

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