Citizen Promaster Diver Automatic vs Orient Kamasu

Side-by-side comparison of specifications and features

CitizenPromaster Diver Automatic

NY0040-09E

OrientKamasu

RA-AA0003R19A

Key Differences

Best Value

Citizen Promaster Diver Automatic (NY0040-09E)

Starting from $265

Biggest Price Drop

Orient Kamasu (Ref. RA-AA0003R19A)

-4.9% in 30 days

Price Comparison

Citizen Promaster Diver Automatic

MSRP

$400

New

$265

Used

$320

Orient Kamasu

MSRP

$580

New

$375

Used

$240

MSRP New (Amazon) Used (eBay)

Comparison of Citizen Promaster Diver Automatic, Orient Kamasu
Specification	Citizen Promaster Diver Automatic	Orient Kamasu
Pricing
MSRP	$400	$580
New Price	$265	$375
Used Price (Low)	$320	$240
Used Price (High)	$1,091	$537
30-Day Trend	↑ +0.6%	↓ -4.9%
Used Price Range	$320 - $1,091	$240 - $537
Identity
Reference	NY0040-09E	RA-AA0003R19A
Nickname	N/A	N/A
Style	Diver, Tool	Diver, Tool
Release Era	2020s	2020s
Dimensions
Diameter	42mm	41.8mm
Thickness	N/A	N/A
Lug Width	N/A	N/A
Lug to Lug	N/A	N/A
Movement
Movement	Automatic	Automatic
Power Reserve / Battery	N/A	N/A
Accuracy	N/A	N/A
Case
Case Material	Stainless Steel	Stainless Steel
Crystal	Mineral Crystal	Sapphire Crystal
Water Resistance	200m (diving)	200m (diving)
Bezel	Unidirectional rotating	Unidirectional rotating
Dial
Dial Color	Black	Black/Blue/Green (varies)
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

Citizen Promaster Diver Automatic and Orient Kamasu can overlap on price or use case, but the buying decision usually comes down to fit, features, and current pricing. They both touch the diver and tool use case, so smaller spec differences can matter more than brand preference.

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.

Citizen Promaster Diver Automatic

Citizen Promaster Diver Automatic is a better fit for mechanical-watch enthusiasts, diver styling.

Orient Kamasu

Orient Kamasu is a better fit for mechanical-watch enthusiasts, diver styling.

Key Differences

Movement and upkeep

Citizen Promaster Diver Automatic: automatic movement

Orient Kamasu: 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

Citizen Promaster Diver Automatic: 42mm

Orient Kamasu: 41.8mm

Their size profiles are relatively close, so fit comes down to shape, weight, and how each watch sits on your wrist.

Water resistance

Citizen Promaster Diver Automatic: 200m

Orient Kamasu: 200m

Water resistance is similar on paper, so focus on fit, features, and price instead.

Price and value

Citizen Promaster Diver Automatic: $265

Orient Kamasu: $375

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

Citizen Promaster Diver Automatic: diver

Orient Kamasu: diver

Both lean into a similar diver use case — the choice is more about fit, features, and price than category.

Crystal and materials

Citizen Promaster Diver Automatic: mineral crystal · steel

Orient Kamasu: sapphire 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 Citizen Promaster Diver Automatic If...

You want the lower current entry price.

Choose Orient Kamasu If...

You are comfortable paying more for a stronger feature set.

Price and Value Notes

Citizen Promaster Diver Automatic is often the value play at current pricing, while Orient Kamasu 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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Citizen Promaster Diver Automatic

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $415 · Live listings

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Orient Kamasu

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $332 · 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.