Side by side

Sinn 856 S UTCvsCWC 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 856 S UTC

Owners widely praise the Sinn 856 S UTC for its legibility, robust build, and versatile wearability as an everyday and business-casual timepiece. The watch is frequently chosen for its adventurous UTC functionality and durability features, including tegimentation, anti-magnetism, and humidity protection, making it suitable for frequent travel. One owner reports accuracy of approximately -10 seconds per day. On balance, owners rate the Sinn 856 S UTC highly for its practical functionality and rugged construction.

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

18 of 29 specs differ
Diameter
856 S UTC40mm
RN81 Clearance Diver Automatic Watch41mm
Power Reserve
856 S UTC38h
RN81 Clearance Diver Automatic Watch
Water Resistance
856 S UTC200m
RN81 Clearance Diver Automatic Watch300m
MSRP
856 S UTC$2,938
RN81 Clearance Diver Automatic Watch$1,875

Full specifications

Case

7 specs
Category
Tool
Diver
Diameter
40mm
41mm
Thickness
11mm
12.7mm
Lug-to-Lug
47mm
Finish
black
Water Resistance
200m
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
Sellita SW330-2
Sellita SW200-1
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
0h
Jewels
25
0
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$2,938
$1,875
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