Side by side

Grand Seiko SBGA375vsZelos Comet 39

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

SBGA375
Grand SeikoSBGA375
MSRP $5,600
Comet 39
ZelosComet 39
MSRP $2,499

At a glance

13 of 29 specs differ
Diameter
SBGA37540mm
Comet 3939mm
Power Reserve
SBGA37572h
Comet 3940h
Water Resistance
SBGA375100m
Comet 3950m
MSRP
SBGA375$5,600
Comet 39$2,499

Full specifications

Case

6 specs
Diameter
40mm
39mm
Thickness
12.5mm
7.6mm
Lug-to-Lug
46.2mm
39mm
Lug Width
19mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
50m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner
Dial Color
Black
Tantalum LE

Movement

3 specs
Caliber
9R65
ETA/Peseux 7001
Type
Spring Drive
Manual
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$5,600
$2,499

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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 SBGA375

Grand Seiko SBGA375 owners praise its classic, subtle design and the engineering of its Spring Drive movement, with one noting it "does not fail to deliver what they are known for." The dial offers good legibility, with polished side bevels on the hour markers catching light well. However, one owner scuffed the bezel within a week, and another questioned if a lug was missing. Overall, owners rate the Grand Seiko SBGA375 highly for its refined design and movement engineering, signaling discerning taste.

From video reviewers

The Spring Drive movement's smooth sweep is a key strength. The bracelet's taper and clasp were cited as areas for improvement.

Zelos Comet 39

Owners widely praise the Zelos Comet 39 for its wearable 39mm size, thin profile under 10mm thanks to its manual-wind Sellita SW215 movement, and its captivating dial with a deep starburst effect. The winding action is described as a joy, and the watch is considered a stunner for its price, blending modern and vintage aesthetics. Some owners note frustration with Zelos's limited production runs leading to quick sell-outs. One owner found the logo childlike, while another experienced strap-rubbing issues with the short lugs, which were resolved with a Milanese bracelet. Overall, owners and reviewers rate the Zelos Comet 39 highly for its excellent value and striking dial design.

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