Orient Kamasu Review

What the Kamasu is and what sets it apart

The Orient Kamasu is the sapphire-crystal member of the Mako family. In a sentence: it carries the same in-house automatic caliber and the same genuine 200 meters as the Mako 3, but it brings one important upgrade on the crystal. When you're shopping for a dive watch, that's the detail most people overlook: even when the caliber and the depth rating are identical on paper, the crystal is the part that lives a daily life. Who is it for? Anyone after a first serious automatic who plans to use the watch like a real tool, not a museum piece.

The sapphire crystal, the real upgrade over the Mako

The Mako 3 uses a mineral crystal; the Kamasu gives you a sapphire crystal. What does that mean in practice? Sapphire is much harder than mineral and far more scratch-resistant; it shrugs off the steel keychain, the doorframe, the desk edge that would mark mineral over time. A mineral crystal collects hairline scratches; sapphire stays clear for years. The one nuance is that under a very hard impact sapphire can be a touch more prone to cracking than mineral, but for daily wear sapphire wins clearly. The Kamasu also usually arrives with slightly better lume than the Mako, so nighttime legibility is a little easier.

The Orient Kamasu is the subject of this review; it comes in several dial and bracelet options on the same roughly 41.8mm case, so the choice is about color, not size.

The movement inside, Orient's F6922

The heart is the same as the Mako: the F6922, Orient's own automatic caliber. 22 jewels, 21,600 beats per hour, roughly 40 hours of power reserve. Two features matter. You can hand-wind it (turn the crown to start a stopped watch), and it hacks (pull the crown and the second hand stops, so you can set it to the second). That combination is not a given on every automatic watch in this price band. Keep your accuracy expectations realistic: a few seconds of drift per day is normal, this is not a chronometer, and if you wear it regularly and rest it in a consistent position you can rein the drift in yourself.

On the wrist and in daily use

The case is about 41.8mm, with a screw-down crown and a unidirectional rotating bezel. The steel bracelet has none of the hollow rattle of cheaper watches and settles nicely on the wrist. The bezel turns with crisp clicks and inspires confidence when timing a dive. A genuine 200 meters comfortably covers swimming and snorkeling, and it is rated well beyond recreational scuba depths, provided the crown is screwed down and sealed before it touches the water. This is where the sapphire really pays off: if you actually use the watch, the crystal stays as clear years later as it was on day one.

Specs at a glance

Spec	Kamasu
Caliber	Orient F6922, automatic
Crystal	Sapphire
Water resistance	200m, screw-down crown
Case	~41.8mm

Kamasu or Mako

This is the question I get asked most. Both run the same F6922 caliber and the same genuine 200 meters. The difference is almost entirely the crystal. If you plan to wear it daily and knock it around, the small premium for the Kamasu's sapphire over the Mako 3 is the most sensible money you'll spend over the long run. If you'll wear it occasionally and with care, the Mako 3 is more than enough and saves you a little. For the bigger picture, see my Orient Mako 3 review, the best dive watches under $500 guide, and the roundup of the best Japanese watches.