CWC RN81 Clearance Diver AutomaticvsIsotope Hydrium

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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.

CWC RN81 Clearance Diver Automatic at true scale

RN81 Clearance Diver Automatic

Isotope Hydrium at true scale

Hydrium

Diameter

41mm

40mm

Lug-to-Lug

47mm

n/a

Thickness

12.7mm

lowest

12.9mm

Water Resistance

300m

300m

Power Reserve

n/a

68h

MSRP

$1,875

$1,701

lowest

Movement

Sellita SW200-1

La Joux-Perret G101

Case

4 specs
Diameter
41mm
40mm
Thickness
12.7mm
12.9mm
Lug-to-Lug
47mm
n/a
Lug Width
20mm
n/a

Crystal & Dial

2 specs
Dial Color
CWC RN81 Clearance Diver Automatic Watch
n/a
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW200-1
La Joux-Perret G101
Power Reserve
0h
68h

Pricing

1 specs
MSRP
$1,875
$1,701
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Reviews

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

CWC RN81 Clearance Diver Automatic

Owners widely praise the CWC RN81 Clearance Diver Automatic Watch for its build quality and comfortable wear, with some appreciating the fixed springbars and historical significance as a tool watch. However, reviewers and owners note the "faux patina" lume color is considered too gold and glossy, and some find the polished case and dial text/logo less appealing. The CWC RN81 Clearance Diver Automatic Watch is also seen as overpriced by some, with concerns raised about the acrylic bezel's durability and import taxes for US buyers. On balance, owners and reviewers value the CWC RN81 Clearance Diver Automatic Watch for its faithful reissue design and historical connection, though price and specific aesthetic choices are points of contention.

Isotope Hydrium

Owners widely report Isotope Hydrium watches offer unique and stunning designs with build quality considered a league above. Reviewers praise the watches for their compelling tool watch nature, originality, and strong value proposition, often highlighting specific elements like matte black dials, luminescent markings, Cerakote case finishes, and fully lumed dials. The 40mm micro-blasted stainless steel case is frequently noted for its comfortable wearability and Streamline Moderne-inspired design, blending familiar and new elements. However, the Landeron 24 automatic movement is consistently cited as running within +/- 12 seconds per day, with a 40-hour power reserve. Some reviewers also note the watch's thickness, around 14.9mm, can contribute to a chunky feel despite the 40mm diameter. Overall, owners and reviewers rate the Isotope Hydrium highly for its distinctive design and excellent value at its price point.