Side by side

Serica Ref. 5303 Diving ChronometervsOblvlo IM Mechanical

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
IM Mechanical
OblvloIM Mechanical
MSRP $178

At a glance

12 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
IM Mechanical42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
IM Mechanical40h
Water Resistance
Ref. 5303 Diving Chronometer300m
IM Mechanical50m
MSRP
Ref. 5303 Diving Chronometer$1,768
IM Mechanical$178

Full specifications

Case

5 specs
Category
Diver
Chronograph
Diameter
39mm
42mm
Thickness
12.2mm
12.5mm
Lug-to-Lug
46.5mm
46mm
Water Resistance
300m
50m

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Black

Movement

4 specs
Caliber
M100 COSC
Power Reserve
42h
40h
Jewels
25
24
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$178

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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.

Oblvlo IM Mechanical

Owners praise the Oblvlo IM Mechanical's cool looks, good lume, and bubble crystal, with one owner finding it wears smaller than expected and is easy to read. However, timekeeping is noted as running fast, approximately +15 to 30 seconds per day. One owner finds the dial design unusual with calendar functions in chronograph-style subdials. On balance, owners appreciate the Oblvlo IM Mechanical's aesthetics and wearability, despite inconsistent timekeeping.

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