Side by side

Serica Ref. 5330 Diving Chronometer DatevsSinn 556 I WT

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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. 5330 Diving Chronometer Date

Serica is praised for its comfortable 39mm case, distinctive twin-scale bezel, and well-executed mesh bracelet. Owners widely report a dial balance and minimal text inspired by 60s dive watches. However, multiple owners flag significant quality control issues, including dials moving when the crown is pulled, minute hands jumping, and misaligned or difficult-to-turn bezels. The 5330 Dive Chronometer variant, which includes a date window, retails for €1,690 and uses a COSC-certified Soprod M100 automatic movement. Overall, owners rate Serica highly for its comfortable 39mm size and dive watch aesthetics, though quality control concerns are a notable caveat.

Sinn 556 I WT

The Sinn 556 I WT is seen as a good value, though some owners find its stark black dial and white markers visually flat compared to more textured dials. While its minimalist design, screw-down crown, and water resistance are praised, some find the two-dimensional dial lacks visual substance. Overall, owners rate the Sinn 556 I WT well for its value and solid specifications, despite some finding its austere dial design polarizing.

At a glance

18 of 29 specs differ
Diameter
Ref. 5330 Diving Chronometer Date39mm
556 I WT38.5mm
Power Reserve
Ref. 5330 Diving Chronometer Date42h
556 I WT38h
Water Resistance
Ref. 5330 Diving Chronometer Date300m
556 I WT200m
MSRP
Ref. 5330 Diving Chronometer Date$2,005
556 I WT$2,106

Full specifications

Case

7 specs
Category
Diver
Tool
Diameter
39mm
38.5mm
Thickness
12.2mm
11mm
Lug-to-Lug
46.5mm
Finish
satinized
Water Resistance
300m
200m
Caseback

Crystal & Dial

5 specs
Crystal Shape
AR Coating
Yes
Underside
Dial Color
Black
Red
Indices
Applied
Lume
Super-LumiNova
Luminescent

Movement

5 specs
Caliber
Soprod M100
Sellita SW200-1
Beat Rate
0 vph
28,800 vph
Power Reserve
42h
38h
Jewels
0
26
Complications
COSC, Date
None

Pricing

1 specs
MSRP
$2,005
$2,106
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