Hamilton Khaki Field Auto vs Seiko SKX009

Side-by-side comparison of specifications and features

HamiltonKhaki Field Auto

H70455533

SeikoSKX009

SKX009K1

Key Differences

Best Value

Seiko SKX009 (SKX009K1)

Starting from $350

Best Water Resistance

Seiko SKX009 (SKX009K1)

200m (2x more)

Slimmest

Hamilton Khaki Field Auto (H70455533)

11mm thick

Biggest Price Drop

Hamilton Khaki Field Auto (H70455533)

-18.1% in 30 days

Price Comparison

Hamilton Khaki Field Auto

MSRP

$695

New

$720

Used

$627

Seiko SKX009

MSRP

$350

New

$844

Used

$364

MSRP New (Amazon) Used (eBay)

Comparison of Hamilton Khaki Field Auto, Seiko SKX009
Specification	Hamilton Khaki Field Auto	Seiko SKX009
Pricing
MSRP	$695	$350
New Price	$720	$844
Used Price (Low)	$627	$364
Used Price (High)	$639	$1,709
30-Day Trend	↓ -18.1%	↑ +5.6%
Used Price Range	$627 - $639	$364 - $1,709
Identity
Reference	H70455533	SKX009K1
Nickname	N/A	N/A
Style	Field, Tool	Diver, Tool
Release Era	2010s	1990s
Dimensions
Diameter	38mm	42mm
Thickness	11mm	13.4mm
Lug Width	20mm	22mm
Lug to Lug	45.5mm	46mm
Movement
Movement	Automatic	Automatic
Power Reserve / Battery	N/A	N/A
Accuracy	N/A	N/A
Case
Case Material	Stainless Steel	Stainless Steel
Crystal	Sapphire Crystal	Hardlex
Water Resistance	100m (recreational diving)	200m (diving)
Bezel	Fixed	Unidirectional rotating
Dial
Dial Color	Black	Blue
Luminous	Yes	Yes
Community
Review Rating	N/A	N/A
In Collections	N/A	N/A
On Wishlists	N/A	N/A
Forum Threads	N/A	N/A

Quick Summary

Hamilton Khaki Field Auto and Seiko SKX009 can look close on a spec sheet, yet the tradeoffs that matter most are usually wrist presence versus easier fit, water-ready utility versus dressier everyday wear, field character versus diver versatility. Start with fit first — case width and lug-to-lug usually matter more than secondary features if wrist comfort is a concern.

How to choose

The biggest practical difference is usually movement and upkeep. Start with wrist fit and movement preference, then use water resistance and price to break the tie.

Hamilton Khaki Field Auto

Hamilton Khaki Field Auto is a better fit for smaller wrists, mechanical-watch enthusiasts, field styling.

Seiko SKX009

Seiko SKX009 is a better fit for buyers who want more wrist presence, mechanical-watch enthusiasts, diver styling.

Key Differences

Movement and upkeep

Hamilton Khaki Field Auto: automatic movement

Seiko SKX009: automatic movement

Both use the same movement type, so maintenance differences are limited and fit or feature details should decide the purchase.

Size and wearability

Hamilton Khaki Field Auto: 38mm · L2L 45.5mm

Seiko SKX009: 42mm · L2L 46mm

Fit is a real separator here — compare case width and lug-to-lug before deciding, especially if wrist comfort matters more than headline features.

Water resistance

Hamilton Khaki Field Auto: 100m

Seiko SKX009: 200m

Water resistance is a meaningful separator here — the higher-rated option gives more flexibility for swimming or rougher daily use.

Price and value

Hamilton Khaki Field Auto: $695

Seiko SKX009: $350

There is a real price gap here — treat the more expensive option as an upgrade decision and confirm whether the extra spend buys something you will notice in weekly use.

Style and use case

Hamilton Khaki Field Auto: field

Seiko SKX009: diver

Hamilton Khaki Field Auto leans more field, while Seiko SKX009 pulls toward diver use case — pick the one that matches how you will actually wear it.

Crystal and materials

Hamilton Khaki Field Auto: sapphire crystal · steel

Seiko SKX009: Hardlex crystal · steel

Crystal choice can change long-term wear expectations — one may prioritize scratch resistance while the other keeps cost or vintage feel in check.

Choose Hamilton Khaki Field Auto If...

You want a smaller case footprint on the wrist.
You are specifically shopping for a field style watch.
You are comfortable paying more for a stronger feature set.

Choose Seiko SKX009 If...

You prefer more dial presence and a larger case feel.
Swimming, beach use, or tougher daily wear is part of the plan.
You are specifically shopping for a diver style watch.

Price and Value Notes

Seiko SKX009 is often the value play at current pricing, while Hamilton Khaki Field Auto makes more sense if you will use its extra features regularly.

There is a real price gap here — treat the more expensive option as an upgrade decision and confirm whether the extra spend buys something you will notice in weekly use.

Where to Check Deals

Check current deals on Amazon and eBay using the buttons below — listing prices, seller quality, and condition can change quickly.

Check current deals on Amazon and eBay

Prices change often, so compare the latest listings and condition options before you buy.

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Hamilton Khaki Field Auto

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $632 · Live listings

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Seiko SKX009

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $475 · Live listings

Affiliate links — WatchCompared earns a commission on qualifying purchases. This doesn't affect your price.

Comparison FAQ

Which one is better for smaller wrists?

Start with case width and lug-to-lug. The watch that looks smaller on paper is often the safer choice, but lug shape and thickness still affect how it wears.

Which is better for swimming or rough daily wear?

Use the water resistance row as the first filter. Higher ratings generally give more flexibility for swimming and water exposure, but strap choice and overall condition still matter.

Should I choose based on price alone?

Price matters, but the better buy is the watch that matches your fit, feature priorities, and use case. Check live listings first, then decide whether the price gap actually changes the ownership experience.