Side by side

Zelos Nasa Edition (sellita)vsFormex Reef 42 mm

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

Nasa Edition (sellita)
ZelosNasa Edition (sellita)
MSRP $629
Reef 42 mm
FormexReef 42 mm
MSRP $2,414

At a glance

14 of 29 specs differ
Diameter
Nasa Edition (sellita)39mm
Reef 42 mm42mm
Power Reserve
Nasa Edition (sellita)40h
Reef 42 mm56h
Water Resistance
Nasa Edition (sellita)50m
Reef 42 mm300m
MSRP
Nasa Edition (sellita)$629
Reef 42 mm$2,414

Full specifications

Case

7 specs
Category
Dress
Diver
Diameter
39mm
42mm
Thickness
7.6mm
11.4mm
Lug-to-Lug
39mm
47mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
300m

Crystal & Dial

3 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
NASA Edition (Sellita)
Black
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
ETA/Peseux 7001
Sellita SW300-1
Type
Manual
Automatic
Power Reserve
40h
56h

Pricing

1 specs
MSRP
$629
$2,414

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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.

Formex Reef 42 mm

The Formex Reef 42 mm is widely praised for its comfortable bracelet featuring a micro-adjust clasp, COSC-certified Sellita movement, and excellent build quality. Owners appreciate the gradient dial's visual appeal and the overall wearability. Some owners note the seconds hand does not perfectly align with markers, and one owner found the lugs' taper hinders third-party strap fit. The bracelet's length and sporty design are noted as limiting versatility by some. On balance, owners and reviewers rate the Formex Reef 42 mm highly for its impressive wearability and value at the price point.

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