Side by side

Grand Seiko SBGP015vsSeiko Prospex Sea

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

SBGP015
Grand SeikoSBGP015
MSRP $3,800
Prospex Sea
SeikoProspex Sea
MSRP $795

At a glance

8 of 29 specs differ
Diameter
SBGP01540mm
Prospex Sea34mm
Power Reserve
SBGP01540h
Prospex Sea40h
Water Resistance
SBGP015200m
Prospex Sea200m
MSRP
SBGP015$3,800
Prospex Sea$795

Full specifications

Case

4 specs
Diameter
40mm
34mm
Thickness
12.4mm
8.7mm
Lug-to-Lug
47.1mm
40.8mm
Lug Width
20mm
16mm

Crystal & Dial

2 specs
AR Coating
Yes
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands and index(es)

Movement

1 specs
Caliber
9F85
6N01

Pricing

1 specs
MSRP
$3,800
$795

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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.

Grand Seiko SBGP015

Owners widely praise the Grand Seiko SBGP015 for its stupendous, substantial, and classy versatility, with reviewers noting the dial print is exceptionally sharp, casting shadows under light. The Grand Seiko 9F85 quartz movement is lauded for its excellent timekeeping, with one owner purchasing it as a grab-and-go option. The watch is listed for £1900. Overall, owners rate the Grand Seiko SBGP015 highly for its sharp dial print and the accuracy of its 9F85 quartz movement.

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent value, robust build, and superb lume, with many appreciating its comfortable wearability due to its case shape and lug-to-lug distance. Reviewers consistently highlight its impressive finishing and classic dive watch design, often noting the bright LumiBrite lume. Some owners find the watch to be large, thick, and heavy, while others consider it the perfect size, indicating a split opinion on wearability for smaller wrists. The power reserve from some movements is noted as less than newer variants, and the clasp quality receives mixed feedback. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional finishing and value proposition in the dive watch market.

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