Unless you have a real interest in watches you may not have heard of the Orient brand. It certainly did not come to mind when I first started looking for a dive watch.

What I discovered about Orient, other than they make good looking watches, is that they are one of the top three watch manufacturers from Japan and produce 2 million watches per year.

If, like me, you’re wondering what the M in M-Force stands for…. well, I have the answer. Mechanical Force. I went duh when I found out.


The movements in Orient watches are exclusively made in Japan and are made in house solely for their own use.

Inside the M-Force Air Diver is Orient calibre 40N5A automatic. This calibre is self winding (automatic), hand windable and hackable with 40 hours of power reserve.

It also has 22 jewels and beats at 21600 bph.


Housing the 40N5A is a 46mm by 13.3mm stainless steel case with a screw down case back.

Over on the front a scratch resistant sapphire crystal covers the dial. Above the crystal is a uni-directional stainless bezel which has been Ion Plated, IP for short. The plating gives the bezel it’s black colour.

At the top or zero position is a luminous marker inside a triangle and white minute markers run around the whole circumference with arabic numbers marking every 10 seconds/minutes.


There is two colour options for the dial, black and yellow. Black being the most popular while yellow seems to only be offered by a few sellers. Oddly enough, double checking some of the research on this watch today shows many online stores as ‘out of stock’ or ‘sold out’.

Hands and hour markers are luminous and even though there is a small date window at the 4 position Orient have still marked it with a luminous half circle.

Just below the one o’clock position is a small sub dial – this the the power reserve indicator.

Notable Features

Down at the 4 o’clock position is a screw down crown with a red band and Orient’s logo on the face.

If you remember back to the Seiko it had an ISO certification for depth. The Orient M-Force watches have 3 ISO certifications – water resistance (200m), shock resistance and anti-magnetism. All made possible by Orient’s own case structure, which is exclusive to the M-Force line.

A soft Orient branded black urethane strap attaches this 200 meter diver to your wrist.

Now, if you do consider buying one these, be aware prices vary from mid 300 to mid 500. That said, buying this automatic dive watch under 400 dollars with those featured specs would be good value.


  • Certifications for depth, shock and anti-magnetism
  • In-house built Japanese movement


  • No anti-reflection on the sapphire crystal
orient m force air diver automatic dive watch

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