Side by side

Zelos Nasa Edition (sellita)vsBoldr Expedition II

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

Nasa Edition (sellita)
ZelosNasa Edition (sellita)
MSRP $629
Expedition II
BoldrExpedition II
MSRP $699

At a glance

14 of 29 specs differ
Diameter
Nasa Edition (sellita)39mm
Expedition II41mm
Power Reserve
Nasa Edition (sellita)40h
Expedition II38h
Water Resistance
Nasa Edition (sellita)50m
Expedition II200m
MSRP
Nasa Edition (sellita)$629
Expedition II$699

Full specifications

Case

6 specs
Category
Dress
Tool
Diameter
39mm
41mm
Thickness
7.6mm
14mm
Lug-to-Lug
39mm
48mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
200m

Crystal & Dial

4 specs
Crystal
Domed Sapphire
Sapphire
AR Coating
Inner
Yes
Dial Color
NASA Edition (Sellita)
I Eiger
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
ETA/Peseux 7001
Sellita SW200-1
Type
Manual
Automatic
Power Reserve
40h
38h

Pricing

1 specs
MSRP
$629
$699

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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.

Boldr Expedition II

Owners widely praise the Boldr Expedition II for its tool watch utility, legible dials, and bead-blasted finish, with many finding its 41mm size ideal for daily wear and comfortable on various wrists. Reviewers and owners alike highlight its excellent value, well-executed details, and the functional design of its knurled crown. Some owners note the dial color can appear creamier than expected online, and one reviewer found the stock rubber strap to be a minor criticism. The Sellita SW200 movement and domed sapphire crystal are also noted as positive features. On balance, owners and reviewers rate the Boldr Expedition II highly for its functional field watch design and excellent value.

From video reviewers

The Boldr Expedition II's solid construction and reliability are notable strengths. A weakness is the potential for dim lume brightness, as the entire dial is fully covered in lume but the reviewer's assessment implies it might be inadequate.

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