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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryIndustryWatch IndustryServionR.D.I. - Charles Käser
R.D.I. - Charles Käser Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of RDI Charles Kaeser is the development and manufacture of high-quality machines, accessories for the watch industry, and in particular remontoirs (watch winders) for mechanical watches. These products are often designed as luxury items or limited editions and are characterized by a combination of technical precision, innovative design, and meticulous craftsmanship.

AI-generated
Offering

Products & services

Industry:Watch Industry
✓ Offered3
Automatic watch winders
Rotary winders for mechanical watches, with the Horizon, Mémoire, Prestige, Safe-Lift and Signature collections, as well as accessories and custom versions made to order.
Watchmaking accessories
Accessories for watchmaking manufactures, offered as a complementary range to watch winders and intended for multiple combinations.
Premium custom rotating display cases
Rotating display cases made to order, designed for collectors, with customization, multiple winders, noble materials, and collaboration with the future owner.
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3.9/5

R.D.I. - Charles Käser

Trust & reputation

ranQ Trust Score of R.D.I. - Charles Käser: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

R.D.I. - Charles Käser scores 59.3 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.75.024%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.40.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.35.08%
R.D.I. - Charles Käser scores 78.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
R.D.I. - Charles Käser scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
R.D.I. - Charles Käser scores 31.4 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.31.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

R.D.I. - Charles Käser reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 4 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 4 reviews across all connected sources

Sources
GGoogle54
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Route du Vieux-Collège 2 B
1077 Servion
Opening hours
Mon
07:45 - 17:30
Tue
07:45 - 17:30
Wed
07:45 - 17:30
Thu
07:45 - 17:30
Fri
07:45 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-112.734.463
Founded
2006 · 20 years
Last commercial register change
July 6, 2023
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
67.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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