Side by side

Hamilton Khaki Aviation Khaki Pilot Pioneer Auto ChronovsZelos Comet 39

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

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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.

Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono

Owners widely praise the Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono for its excellent dial legibility and unique, vintage-inspired design, with some noting its thinness and 72-hour power reserve. Reviewers highlight its charismatic, function-forward military aesthetic and attractive dial execution. The watch is considered a wise starting point for a chronograph under $2,000, with observed accuracy around +/- 4 seconds per day and a 60-hour power reserve. Some owners find the non-screw-down crown limits water confidence, and one reviewer notes the mineral crystal scratches more easily than sapphire. The price is considered a bit punchy by one source. On balance, owners and reviewers rate the Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono highly for its handsome, utilitarian design and value.

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

13 of 29 specs differ
Diameter
Khaki Aviation Khaki Pilot Pioneer Auto Chrono41mm
Comet 3939mm
Power Reserve
Khaki Aviation Khaki Pilot Pioneer Auto Chrono60h
Comet 39
Water Resistance
Khaki Aviation Khaki Pilot Pioneer Auto Chrono100m
Comet 3950m
MSRP
Khaki Aviation Khaki Pilot Pioneer Auto Chrono$1,995
Comet 39$2,499

Full specifications

Case

7 specs
Category
Chronograph
Dress
Diameter
41mm
39mm
Thickness
16mm
7.6mm
Lug-to-Lug
0mm
39mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
50m

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Beige
Tantalum LE

Movement

3 specs
Caliber
Hamilton H-31
ETA/Peseux 7001
Type
Automatic
Manual
Power Reserve
60h
0h

Pricing

1 specs
MSRP
$1,995
$2,499
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