Side by side

CWC 6BB-WRvsGrand Seiko SBGA427

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

6BB-WR
CWC6BB-WR
MSRP $1,875
SBGA427
Grand SeikoSBGA427
MSRP $5,800

At a glance

11 of 29 specs differ
Diameter
6BB-WR42mm
SBGA42739mm
Power Reserve
6BB-WR40h
SBGA42772h
Water Resistance
6BB-WR100m
SBGA427100m
MSRP
6BB-WR$1,875
SBGA427$5,800

Full specifications

Case

5 specs
Category
Chronograph
Dress
Diameter
42mm
39mm
Thickness
14.9mm
12.3mm
Lug-to-Lug
49mm
46.8mm
Lug Width
20mm
19mm

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
CWC 6BB-WR
Black

Movement

3 specs
Caliber
Sellita SW510
9R65
Type
Automatic
Spring Drive
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$1,875
$5,800

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What people say

Owners + reviewers, side by side

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

CWC 6BB-WR

The CWC 6BB-WR is widely praised for its legible matte black dial, strong lume, and crisp chronograph operation. Owners and reviewers note its military heritage and rugged, confidence-inspiring build with a screw-down crown and pushers. The Sellita SW510 BH b automatic movement kept time within COSC range in testing. However, its 14.9mm thickness and 80g weight make it wear large, and the cam-lever movement lacks the satisfying click of a column wheel. Fixed bars limit strap options. On balance, owners and reviewers rate the CWC 6BB-WR highly for its legible dial and robust pilot chronograph design at its price point.

Grand Seiko SBGA427

Grand Seiko SBGA427 owners widely praise its extensive Zaratsu polishing and the "hall of mirrors" effect created by its diamond-cut indexes, complemented by a subtle, reeded dial and a striking green seconds hand. The 39mm case is noted for its comfortable, tapered bracelet, and the 9R65 Spring Drive movement is visible through the caseback. Some owners report the highly polished Zaratsu finish is prone to scuffs and scratches, with one mentioning a scratch near 1 o'clock. The Grand Seiko SBGA427 sold for $3750. Overall, owners rate the Grand Seiko SBGA427 highly for its exceptional finishing and the unique visual appeal of its dial and indexes.

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