Side by side

CWC 6BB-WRvsSeiko Prospex Sea 1968 Heritage Diver's GMT

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

6BB-WR
CWC6BB-WR
MSRP $1,875
Prospex Sea 1968 Heritage Diver's GMT
SeikoProspex Sea 1968 Heritage Diver's GMT
MSRP $1,500
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.

Seiko Prospex Sea 1968 Heritage Diver's GMT

The Seiko Prospex Sea 1968 Heritage Diver's GMT is widely praised for its build quality, finishing, and comfortable wearability, offering good value for its price point. Owners and reviewers highlight the attractive silver/white sunray dial, blue ceramic bezel, and the premium feel of the improved bracelet clasp with excellent micro-adjustment. The Caliber 6R54 movement provides a 72-hour power reserve, and real-world accuracy often exceeds its stated range of +25 to -15 seconds per day, with some owners reporting figures around +3 to +5 seconds per day. However, the caller-style GMT functionality is a point of contention for some, who find the GMT scale difficult to read and prefer a flyer GMT at this price. Some also find the crown position at 4 o'clock undesirable, and a few note a lack of dial contrast or illegibility of the inner bezel.

At a glance

11 of 29 specs differ
Diameter
6BB-WR42mm
Prospex Sea 1968 Heritage Diver's GMT42mm
Power Reserve
6BB-WR40h
Prospex Sea 1968 Heritage Diver's GMT72h
Water Resistance
6BB-WR100m
Prospex Sea 1968 Heritage Diver's GMT200m
MSRP
6BB-WR$1,875
Prospex Sea 1968 Heritage Diver's GMT$1,500

Full specifications

Case

4 specs
Category
Chronograph
Diver
Thickness
14.9mm
12.9mm
Lug-to-Lug
49mm
48.6mm
Water Resistance
100m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
CWC 6BB-WR
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW510
6R54
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$1,875
$1,500
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