Side by side

Serica Ref. 5303 Diving ChronometervsBaltic MR Classic

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
MR Classic
BalticMR Classic
MSRP $589

At a glance

12 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
MR Classic36mm
Power Reserve
Ref. 5303 Diving Chronometer42h
MR Classic42h
Water Resistance
Ref. 5303 Diving Chronometer300m
MR Classic30m
MSRP
Ref. 5303 Diving Chronometer$1,768
MR Classic$589

Full specifications

Case

5 specs
Category
Diver
Dress
Diameter
39mm
36mm
Thickness
12.2mm
9mm
Lug-to-Lug
46.5mm
44mm
Water Resistance
300m
30m

Crystal & Dial

4 specs
Crystal
Sapphire
Hesalite
AR Coating
Yes
Inner
Dial Color
Enamel Black
Blue
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
M100 COSC
Hangzhou CAL5000a Micro-rotor
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$589

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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.

Baltic MR Classic

Owners widely praise the Baltic MR Classic's attractive dial with applied Breguet numerals and granular texture, noting it looks far more expensive than its price. Reviewers highlight the refined, dressy aesthetic and the visually appealing micro-rotor movement. Some owners report precise time-setting and a smooth winding action. Accuracy figures vary, with one owner seeing +1 second per day and another averaging +10 seconds per day. Concerns exist regarding the gold PVD finish's durability, with reports of wear from strap friction. The 36mm case is described as small, and some find the bezel chunky and the watch's overall height significant. The Chinese Hangzhou micro-rotor movement is noted as potentially noisy and difficult for local repair, though Baltic's customer service and warranty are praised. Overall, owners and reviewers rate the Baltic MR Classic highly for its dressy aesthetic and dial finishing at its price point.

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