Side by side

Zelos Nasa Edition (sellita)vsBaltic Hermétique Summer

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

Nasa Edition (sellita)
ZelosNasa Edition (sellita)
MSRP $629
Hermétique Summer
BalticHermétique Summer
MSRP $594

At a glance

13 of 29 specs differ
Diameter
Nasa Edition (sellita)39mm
Hermétique Summer37mm
Power Reserve
Nasa Edition (sellita)40h
Hermétique Summer42h
Water Resistance
Nasa Edition (sellita)50m
Hermétique Summer150m
MSRP
Nasa Edition (sellita)$629
Hermétique Summer$594

Full specifications

Case

5 specs
Diameter
39mm
37mm
Thickness
7.6mm
10.8mm
Lug-to-Lug
39mm
46mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
150m

Crystal & Dial

4 specs
Crystal
Domed Sapphire
Sapphire
AR Coating
Inner
Yes
Dial Color
NASA Edition (Sellita)
Orange
Lume
None
BGW9

Movement

3 specs
Caliber
ETA/Peseux 7001
Miyota 9039
Type
Manual
Automatic
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$629
$594

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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.

Baltic Hermétique Summer

Reviewers highlight the Baltic Hermétique Summer's compact 37mm brushed case with a polished bezel and 150 meters of water resistance. The watch features glossy dials in bright colors with raised BGW9 Super-LumiNova indices that emit a strong blue glow, and it comes with color-matched FKM rubber straps or Baltic bracelets. The Miyota 9039 movement supports hacking and hand-winding. However, the recessed crown can be difficult to manipulate if fingernails are not long enough, and the movement has a stated accuracy of -10/+30 seconds per day. Overall, reviewers praise the Baltic Hermétique Summer for its well-balanced, colorful dials and strong lume at an affordable price point.

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