Side by side

Sinn 156.1vsCWC RN81 Clearance Diver Automatic Watch

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.

Sinn 156.1

Owners widely praise the Sinn 156.1 for its central minutes chronograph, useful for tracking elapsed time, its purpose-built tool watch design, and appealing proportions. Some owners find the 43mm case and 50.8mm lug-to-lug dimensions large, with one noting the bracelet can make it feel oversized on smaller wrists, though it wears better on a strap. One owner found the Sinn 156.1 pricey. On balance, owners rate the Sinn 156.1 highly for its functional central minutes chronograph and tool watch aesthetic.

CWC RN81 Clearance Diver Automatic Watch

Owners widely praise the CWC diver for its historical significance, build quality, and tool-watch nature, with many finding it comfortable and a go-to piece. Some owners appreciate the fixed springbars for NATO straps and the option of various case finishes. However, the CWC is frequently considered overpriced, with buyers paying a premium for the brand's history and reissue status, especially for the automatic version. The acrylic bezel's durability and the "faux patina" lume color are noted concerns for some. On balance, owners and reviewers find the CWC diver to be a well-built, historically significant tool watch, though many question its value proposition at its price point.

At a glance

19 of 29 specs differ
Diameter
156.143mm
RN81 Clearance Diver Automatic Watch41mm
Power Reserve
156.148h
RN81 Clearance Diver Automatic Watch
Water Resistance
156.1100m
RN81 Clearance Diver Automatic Watch300m
MSRP
156.1$4,266
RN81 Clearance Diver Automatic Watch$1,875

Full specifications

Case

8 specs
Category
Tool
Diver
Diameter
43mm
41mm
Thickness
15.45mm
12.7mm
Lug-to-Lug
47mm
Lug Width
22mm
20mm
Finish
bead-blasted
Water Resistance
100m
300m
Caseback

Crystal & Dial

5 specs
Crystal Shape
AR Coating
Underside
Dial Color
Black
CWC RN81 Clearance Diver Automatic Watch
Indices
Lume
Luminescent
Super-LumiNova

Movement

5 specs
Caliber
SINN Movement SZ01
Sellita SW200-1
Beat Rate
28,800 vph
0 vph
Power Reserve
48h
0h
Jewels
28
0
Complications
Date, Chronograph, Pilot's Bezel
None

Pricing

1 specs
MSRP
$4,266
$1,875
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