Side by side

Serica Ref. 5303 Diving ChronometervsLum-Tec Eclipse

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
Eclipse
Lum-TecEclipse
MSRP $695

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Eclipse42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Eclipse40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Eclipse101m
MSRP
Ref. 5303 Diving Chronometer$1,768
Eclipse$695

Full specifications

Case

7 specs
Category
Diver
Sport
Diameter
39mm
42mm
Thickness
12.2mm
Lug-to-Lug
46.5mm
Lug Width
20mm
Material
Stainless Steel
316L Stainless Steel (DLC coated)
Water Resistance
300m
101m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
E6
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
M100 COSC
Miyota 9039
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$695

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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.

Lum-Tec Eclipse

Owners widely praise the Lum-Tec Eclipse for its comfortable, slim profile and thin wearability, with specific commendations for its beautiful dial, good readability, and bracelet design. The knurling on the crown is also noted as a positive feature. Some owners express concern over the 42mm case size and find the dial's font and indices unappealing, though others appreciate the deep-dish slant. One owner notes a slight gap where the lugs meet the bracelet. The Lum-Tec Eclipse e3 variant features a Miyota 9039 movement, a solid bracelet, a sunburst dial, and exceptionally bright lume. Overall, owners rate the Lum-Tec Eclipse highly for its slim design and attractive dial at its price point.

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