Aera Instruments C-1vsTissot Telemeter 1938

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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.

Aera Instruments C-1 at true scale

C-1

Tissot Telemeter 1938 at true scale

Telemeter 1938

Diameter

42mm

42mm

Lug-to-Lug

49.5mm

n/a

Thickness

15.8mm

13.8mm

lowest

Water Resistance

100m

highest

30m

Power Reserve

56h

68h

highest

MSRP

$2,950

$2,400

lowest

Movement

Sellita SW510

Tissot Valjoux A05.231

Case

3 specs
Thickness
15.75mm
13.85mm
Lug-to-Lug
49.55mm
n/a
Water Resistance
100m
30m

Crystal & Dial

4 specs
Crystal Shape
n/a
Domed
AR Coating
n/a
Yes
Dial Color
Cloud
Silver
Indices
n/a
Arabic

Movement

3 specs
Caliber
Sellita SW510
Tissot Valjoux A05.231
Power Reserve
56h
68h
Jewels
27
0

Pricing

1 specs
MSRP
$2,950
$2,400
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Aera Instruments C-1

The Aera Instruments C-1 is praised for its excellent, distinctive design that balances tool-watch masculinity with soft, gentle aesthetics. The 42mm case size is considered large, and a smaller option would be welcome. On balance, reviewers highlight the distinctive design as the primary reason for their positive assessment.

Tissot Telemeter 1938

Owners and reviewers widely praise the Tissot Telemeter 1938 for its vintage-inspired design, handsome dial finishing, and the value it offers as a mechanical chronograph. The automatic Tissot Valjoux A05.231 movement, with its 68-hour power reserve, is noted positively, and some owners describe the movement as feeling "alive." The watch features a polished stainless steel case, monopushers, and a double-sided anti-reflective coating. However, the 42mm case size is frequently cited as being too large for the retro aesthetic, with many wishing for a smaller variant, and its 30-meter water resistance is considered poor. The pusher feel is described as sharp but slightly stiff, and the average accuracy is reported at +6 seconds per day. On balance, owners and reviewers rate the Tissot Telemeter 1938 highly for its attractive vintage design and good value, despite concerns about its case size.

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