Side by side

Glycine Airman No. 1 PuristvsZelos Spearfish GMT

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

Airman No. 1 Purist
GlycineAirman No. 1 Purist
MSRP $2,800
Spearfish GMT
ZelosSpearfish GMT
MSRP $999

At a glance

16 of 29 specs differ
Diameter
Airman No. 1 Purist36mm
Spearfish GMT40mm
Power Reserve
Airman No. 1 Purist48h
Spearfish GMT40h
Water Resistance
Airman No. 1 Purist30m
Spearfish GMT200m
MSRP
Airman No. 1 Purist$2,800
Spearfish GMT$999

Full specifications

Case

7 specs
Diameter
36mm
40mm
Thickness
11.6mm
13mm
Lug-to-Lug
40mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
30m
200m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Silver
Frost
Indices
Applied
Lume
Luminous
None

Movement

3 specs
Caliber
SW330-2
Sellita SW330-2
Power Reserve
48h
40h
Complications
Date
None

Pricing

1 specs
MSRP
$2,800
$999

Follow this matchup

Get a note when Glycine Airman No. 1 Purist vs Zelos Spearfish GMT gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Glycine Airman No. 1 Purist

The Glycine Airman No. 1 Purist is praised as a faithful re-creation of a historical 24-hour watch, with one owner purchasing it for $620 and viewing it as a long-term keeper due to its heritage reissue status and vintage aesthetics. The 36mm size is noted as a conversation starter. However, the acrylic crystal is prone to scratching, with one example showing a small scratch over the date window. Some community members suggest pre-Invicta models may hold value better. Overall, owners appreciate the Glycine Airman No. 1 Purist for its authentic vintage appeal and unique dial, though the acrylic crystal requires careful handling.

Zelos Spearfish GMT

The Zelos Spearfish GMT is widely praised for its exceptional value, with reviewers highlighting its superb finishing, flawless machining, and a tool-less micro-adjustment clasp that exceeds its price point. It features a La Joux-Perret G100 movement with a 68-hour power reserve, achieving an average accuracy of +2.6 seconds per day, or a Miyota 9075 movement offering flier-style GMT functionality. The 40mm case and bidirectional 48-click ceramic bezel are well-executed, though one reviewer noted a minor compromise in the end link fit. Overall, owners and reviewers rate the Zelos Spearfish GMT highly for its impressive finishing and value proposition.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.