Side by side

Zelos Nasa Edition (sellita)vsGrand Seiko SLGW003

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

Nasa Edition (sellita)
ZelosNasa Edition (sellita)
MSRP $629
SLGW003
Grand SeikoSLGW003
MSRP $11,600

At a glance

11 of 29 specs differ
Diameter
Nasa Edition (sellita)39mm
SLGW00338.6mm
Power Reserve
Nasa Edition (sellita)40h
SLGW00380h
Water Resistance
Nasa Edition (sellita)50m
SLGW00330m
MSRP
Nasa Edition (sellita)$629
SLGW003$11,600

Full specifications

Case

5 specs
Diameter
39mm
38.6mm
Thickness
7.6mm
9.95mm
Lug-to-Lug
39mm
45mm
Material
316L Stainless Steel
Titanium
Water Resistance
50m
30m

Crystal & Dial

3 specs
Crystal
Domed Sapphire
Sapphire
AR Coating
Inner
Yes
Dial Color
NASA Edition (Sellita)
Black

Movement

2 specs
Caliber
ETA/Peseux 7001
9SA4
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$629
$11,600

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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.

Zelos Nasa Edition (sellita)

The Zelos Nasa Edition (sellita) is praised for its thinness, stemming from its hand-wound Sellita SW215 movement, and is noted for its good size and wearability. The watch features a 39mm case, a 45mm lug to lug, and a 20mm lug width. On balance, owners rate the Zelos Nasa Edition (sellita) highly for its comfortable dimensions and thin profile.

Grand Seiko SLGW003

The Grand Seiko SLGW003 is praised for its comfortable, lightweight Brilliant Hard Titanium case, meticulous finishing, and a clean, modern dial. Reviewers highlight the new 9SA4 manual-wind movement, noting its attractive finishing, 80-hour power reserve, and accuracy of -3/+5 seconds per day. It is considered a versatile dress watch blending vintage and future Grand Seiko spirit. The €11,700 price is noted as expensive, with some questioning its value. Overall, reviewers rate the Grand Seiko SLGW003 highly for its elegant design and impressive manual-wind movement at its flagship price point.

From video reviewers

The slim profile of the Evolution 9 case is a key strength. Water resistance is a weakness, with figures of 50 meters and 30 meters cited. Reviewers disagree on whether the manual-wind Hi-Beat movement is a rarity or a notable addition.

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