Side by side

Serica Ref. 5303 Diving ChronometervsHorage Lensman 1

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
Lensman 1
HorageLensman 1
MSRP $11,190

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Lensman 141mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Lensman 1120h
Water Resistance
Ref. 5303 Diving Chronometer300m
Lensman 1100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Lensman 1$11,190

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
39mm
41mm
Thickness
12.2mm
12mm
Lug-to-Lug
46.5mm
49mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Yes
No
Dial Color
Enamel Black
Black

Movement

4 specs
Caliber
M100 COSC
Horage K-TOU
Type
Automatic
Manual
Power Reserve
42h
120h
Complications
COSC
Tourbillon

Pricing

1 specs
MSRP
$1,768
$11,190

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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.

Horage Lensman 1

The Horage Lensman 1 is praised for its in-house K-TOU tourbillon movement, grade 5 titanium case, and 100-meter water resistance. Reviewers highlight its value at CHF 8,890, featuring a blacked-out movement with silicon parts and chronometer-level accuracy of -4/+6 seconds per day. The 10.3mm thin titanium case, inspired by camera design, houses a black dial with applied indices and Super-LumiNova for legibility, and the movement offers a 120-hour power reserve. One reviewer noted the rhodium-plated hands disrupt the blackened aesthetic. Overall, owners and reviewers rate the Horage Lensman 1 highly for its in-house tourbillon movement and value proposition.

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