Side by side

Hamilton Khaki Aviation Khaki Pilot Pioneer Auto ChronovsSeiko Prospex SPEEDTIMER

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

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.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER for its attractive vintage-inspired design and compact 39mm size, with one owner finding the red dial unique and gorgeous. Reviewers and owners note the solar-powered quartz movement, with one owner considering $700 expensive for this specification and another wishing for a thinner case. The SPEEDTIMER is described as a sturdy and reliable everyday watch, though one owner questioned its resale value. Overall, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER for its stylish, compact design and solar functionality, despite some finding the price point and case thickness slightly high.

At a glance

12 of 29 specs differ
Diameter
Khaki Aviation Khaki Pilot Pioneer Auto Chrono41mm
Prospex SPEEDTIMER42.5mm
Power Reserve
Khaki Aviation Khaki Pilot Pioneer Auto Chrono60h
Prospex SPEEDTIMER45h
Water Resistance
Khaki Aviation Khaki Pilot Pioneer Auto Chrono100m
Prospex SPEEDTIMER100m
MSRP
Khaki Aviation Khaki Pilot Pioneer Auto Chrono$1,995
Prospex SPEEDTIMER$3,000

Full specifications

Case

4 specs
Diameter
41mm
42.5mm
Thickness
16mm
15.1mm
Lug-to-Lug
0mm
50mm
Lug Width
22mm
20mm

Crystal & Dial

4 specs
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Dial Color
Beige
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
H-31
8R46
Power Reserve
60h
45h
Jewels
0
34

Pricing

1 specs
MSRP
$1,995
$3,000
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