Side by side

Zelos Nasa Edition (sellita)vsEcho/Neutra Rivanera Piccolo

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

Nasa Edition (sellita)
ZelosNasa Edition (sellita)
MSRP $629
Rivanera Piccolo
Echo/NeutraRivanera Piccolo
MSRP $1,640

At a glance

12 of 29 specs differ
Diameter
Nasa Edition (sellita)39mm
Rivanera Piccolo33mm
Power Reserve
Nasa Edition (sellita)40h
Rivanera Piccolo40h
Water Resistance
Nasa Edition (sellita)50m
Rivanera Piccolo100m
MSRP
Nasa Edition (sellita)$629
Rivanera Piccolo$1,640

Full specifications

Case

7 specs
Category
Dress
Diameter
39mm
33mm
Thickness
7.6mm
6.9mm
Lug-to-Lug
39mm
46mm
Material
316L Stainless Steel
Titanium Grade 5
Finish
Brushed and polished
Polished + Sandblasted
Water Resistance
50m
100m

Crystal & Dial

2 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
NASA Edition (Sellita)
Guilloché Black

Movement

2 specs
Caliber
ETA/Peseux 7001
Sellita SW1000
Type
Manual
Automatic

Pricing

1 specs
MSRP
$629
$1,640

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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.

Echo/Neutra Rivanera Piccolo

The Echo/Neutra Rivanera Piccolo is praised for its charming and impressive design, featuring a lightweight 26mm grade 5 titanium case with a sandblasted finish and polished edges. It is powered by an automatic Sellita SW1000 elaboré grade movement with a 46-hour power reserve and is available with an ultra-black Musou Black dial option. One reviewer suggested removing the date for a cleaner dial, while both sources note the straps lack a quick-release system. Overall, reviewers highlight the Rivanera Piccolo's distinctive design and titanium construction as its primary strengths.

From video reviewers

The thin 6.9mm case is a standout feature. Reviewers noted the Grade 5 titanium case construction. No shared weaknesses were identified.

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