Orient Kamasu vs Orient M-Force

Both are dive watches in the mid tier. In short: the Orient Kamasu wears 41.8mm vs the Orient M-Force's 45mm — choose by wrist size. The Orient Kamasu is automatic, 200m water resistance, 41.8mm, sapphire crystal; the Orient M-Force is automatic, 200m water resistance, 45mm, sapphire crystal.

Last verified 2026-06-27 · specs from manufacturer data · tier = price band, confirm the live price at the retailer

Spec	Orient Kamasu	Orient M-Force
Movement	Automatic	Automatic
Water resistance	200m	200m
Case size	41.8mm	45mm
Crystal	sapphire	sapphire
Style	Dive	Dive
Price tier	Mid	Mid

Which should you buy?

The Orient Kamasu wears 41.8mm vs the Orient M-Force's 45mm — choose by wrist size.

Where to buy

Orient KamasuSee price on AmazonCheck price

Orient M-ForceSee price on AmazonCheck price

As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Affiliate links never affect our specs or which watches we compare.

Ordering a watch? Amazon Prime includes fast delivery on eligible items, and eligible new members may be offered a free trial. Delivery speed and return terms vary by item, so check the listing when sizing is a gamble. See if you can try Prime free →

Affiliate link — we may earn a commission on qualifying sign-ups, at no extra cost to you. Current terms are on Amazon's page.

Neither of these quite right? Answer five questions — wrist size, what it's for, battery or automatic, whether it gets wet, budget — and see which of the 128 watches actually fit →

FAQ

What's the difference between the Orient Kamasu and the Orient M-Force?
Both are dive watches in the mid tier. The Orient Kamasu is automatic, 200m water resistance, 41.8mm, sapphire crystal; the Orient M-Force is automatic, 200m water resistance, 45mm, sapphire crystal.

Which is better value, the Orient Kamasu or the Orient M-Force?
Both sit in the mid tier, so it comes down to movement, water resistance and case size — see the spec table above.

Citing these specs? Go ahead — manufacturer data, last verified 2026-06-27. Copy a ready-made reference:

More dive comparisons: Casio Duro MDV106 (Marlin) vs Orient Ray II · Seiko Prospex Turtle SRPE vs Seiko Prospex Solar Tuna SNE575 · Christopher Ward C60 Trident vs Marathon TSAR · Seiko Prospex Sumo SPB103 vs Casio G-Shock Frogman GWF-A1000 · dive watches under ~$600 · all dive watches · all comparisons