Which is cheaper, the Grand Seiko SLGW007 or the Zelos Comet 39?

At MSRP the Zelos Comet 39 is the cheaper of the two at $2,499, against $10,000 for the Grand Seiko SLGW007 — a $7,501 gap before any retailer discounting.

Which is bigger, the Grand Seiko SLGW007 or the Zelos Comet 39?

The Zelos Comet 39 wears larger at 39mm versus 38.6mm for the Grand Seiko SLGW007 — a 0.4mm difference across the dial.

Which has better water resistance, the Grand Seiko SLGW007 or the Zelos Comet 39?

The Zelos Comet 39 is rated to 50m versus 30m for the Grand Seiko SLGW007.

Which has a longer power reserve, the Grand Seiko SLGW007 or the Zelos Comet 39?

The Grand Seiko SLGW007 carries a 80-hour power reserve against 40 hours on the Zelos Comet 39.

What movement does the Grand Seiko SLGW007 run compared to the Zelos Comet 39?

Both watches run manual movements — the Grand Seiko SLGW007 uses the 9SA4 and the Zelos Comet 39 uses the ETA/Peseux 7001.

Side by side

Grand Seiko SLGW007vsZelos Comet 39

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

Grand Seiko SLGW007

slgw007g

MSRP $10,000

Zelos Comet 39

zelos-comet-39

MSRP $2,499

At a glance

11 of 29 specs differ

Diameter

SLGW00738.6mm

Comet 3939mm

Power Reserve

SLGW00780h

Comet 3940h

Water Resistance

SLGW00730m

Comet 3950m

MSRP

SLGW007$10,000

Comet 39$2,499

Full specifications

Case

5 specs

Diameter

38.6mm

39mm

Thickness

9.95mm

7.6mm

Lug-to-Lug

45mm

39mm

Material

Stainless Steel

316L Stainless Steel

Water Resistance

30m

50m

Crystal & Dial

3 specs

Crystal

Sapphire

Domed Sapphire

AR Coating

Yes

Inner

Dial Color

Black

Tantalum LE

Movement

2 specs

Caliber

9SA4

ETA/Peseux 7001

Power Reserve

80h

40h

Pricing

1 specs

MSRP

$10,000

$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 SLGW007

Grand Seiko SLGW007 owners and reviewers praise its compact 38.6mm x 9.95mm Evolution 9 case and the textured "Moonlit Birch" dial, described as moody, elegant, and captivating. The technically credible 9SA4 hand-wound movement with an 80-hour power reserve is also highlighted. Its 30m water resistance and lack of lume are noted as appropriate for a dress watch. Overall, owners and reviewers rate the Grand Seiko SLGW007 highly for its refined case, captivating dial, and updated movement.

Time + Tide

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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