Side by side

Jack Mason Strat-o-timer GMTvsZelos Comet 39

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

Strat-o-timer GMT
Jack MasonStrat-o-timer GMT
MSRP $1,099
Comet 39
ZelosComet 39
MSRP $2,499
What people say

Owners + reviewers, side by side

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

Jack Mason Strat-o-timer GMT

Owners widely praise the Jack Mason Strat-o-timer GMT for its impressive fit and finish, excellent value, and true traveler GMT complication, especially considering its price point. Reviewers and owners alike highlight the comfortable 40mm tonneau case, sapphire crystal bezel, and retro styling. Some owners note the hour markers are "chubby" but do not affect legibility, and the strap ends are slightly large. One owner describes the 7-link bracelet as rivaling luxury brands. On balance, owners and reviewers rate the Jack Mason Strat-o-timer GMT highly for its build quality and value proposition.

Zelos Comet 39

Owners widely praise the Zelos Comet 39 for its wearable 39mm size, thin profile under 10mm thanks to its manual-wind Sellita SW215 movement, and its captivating dial with a deep starburst effect. The winding action is described as a joy, and the watch is considered a stunner for its price, blending modern and vintage aesthetics. Some owners note frustration with Zelos's limited production runs leading to quick sell-outs. One owner found the logo childlike, while another experienced strap-rubbing issues with the short lugs, which were resolved with a Milanese bracelet. Overall, owners and reviewers rate the Zelos Comet 39 highly for its excellent value and striking dial design.

At a glance

12 of 29 specs differ
Diameter
Strat-o-timer GMT40mm
Comet 3939mm
Power Reserve
Strat-o-timer GMT42h
Comet 3940h
Water Resistance
Strat-o-timer GMT200m
Comet 3950m
MSRP
Strat-o-timer GMT$1,099
Comet 39$2,499

Full specifications

Case

6 specs
Category
Dress
Diameter
40mm
39mm
Thickness
13.2mm
7.6mm
Lug-to-Lug
47mm
39mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
50m

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Tantalum LE

Movement

3 specs
Caliber
Miyota 9075
ETA/Peseux 7001
Type
Automatic
Manual
Power Reserve
42h
40h

Pricing

1 specs
MSRP
$1,099
$2,499
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