Side by side

Serica Ref. 5303 Diving ChronometervsVario 1918 SG60 Merlion Trench

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
1918 SG60 Merlion Trench
Vario1918 SG60 Merlion Trench
MSRP $428

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
1918 SG60 Merlion Trench37mm
Power Reserve
Ref. 5303 Diving Chronometer42h
1918 SG60 Merlion Trench40h
Water Resistance
Ref. 5303 Diving Chronometer300m
1918 SG60 Merlion Trench100m
MSRP
Ref. 5303 Diving Chronometer$1,768
1918 SG60 Merlion Trench$428

Full specifications

Case

6 specs
Category
Diver
Field
Diameter
39mm
37mm
Thickness
12.2mm
10mm
Lug-to-Lug
46.5mm
45mm
Lug Width
20mm
18mm
Water Resistance
300m
100m

Crystal & Dial

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

Movement

3 specs
Caliber
M100 COSC
Miyota 82s5
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$428

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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.

Vario 1918 SG60 Merlion Trench

The Vario 1918 SG60 Merlion Trench is widely seen as a commemorative keepsake, particularly for those celebrating Singapore's 60th anniversary or born in 1965. Reviewers note its vibrant red enamel dial and 37mm steel case with fixed wire lugs, along with 100m water resistance. One owner reported the watch is "patina-ing well" after three years, and the Miyota 82S5 movement is considered a reliable, cost-effective base. Overall, owners and reviewers appreciate the Vario 1918 SG60 Merlion Trench as a unique souvenir and tribute piece, with its distinctive enamel dial being a key draw.

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