Echo/Neutra 1956 3HvsSerica Ref. 5330 Diving Chronometer Date
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

1956 3H

Ref. 5330 Diving Chronometer Date
Diameter
40mm
39mm
Lug-to-Lug
46mm
lowest
46.5mm
Thickness
11.9mm
lowest
12.2mm
Water Resistance
100m
300m
highest
Power Reserve
41h
42h
highest
MSRP
$1,025
lowest
$2,005
Movement
Sellita SW200-1
Soprod M100
Case
8 specsCrystal & Dial
3 specsMovement
5 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Echo/Neutra 1956 3H for its exceptionally well-executed bracelet, with one owner comparing it favorably to a Rolex Oyster. The watch is noted for its unique blend of vintage tool-watch and mid-century design, featuring a dramatic box-domed sapphire crystal and a gray dial that exceeds build quality expectations. Legibility in low light presents a challenge due to the fixed, lumed bezel and non-lumed dial, and some may find the branding off-putting. Overall, owners rate the Echo/Neutra 1956 3H highly for its unique character and comfortable wearability, driven by its exceptional bracelet and distinctive design.
The case finishing and vintage aesthetic are consistently praised. The 100m water resistance and Sellita SW200-1 movement are also noted strengths. Reviewers did not reach a consensus on any weaknesses.
Owners widely report positive accuracy with the Soprod M100 movement, with one noting +1-2 seconds per day over three years. The Serica Ref. 5330 Diving Chronometer Date features a comfortable 39mm case and a twin-scale bezel. Some owners have experienced significant quality control issues, including dials moving when the crown is pulled and misaligned bezels, alongside inconsistent customer service experiences. The watch retails for €1,690 and includes both a mesh and elastic strap. On balance, owners and reviewers praise the Serica Ref. 5330 Diving Chronometer Date for its comfortable 39mm size and accurate Soprod M100 movement, despite some quality control and customer service concerns.
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