This is the Orient 2EX0100CM0, also known as the Orient Mini-Beast.
Movement: 46G41 21 Jewels
Inner rotating calendar ring
Power Reserve Indicator
Unidirectional Rotating Outer Bezel
As you can see from the photos, like most Orients this one has a wonderful textured dial. The calendar ring is adjusted using the crown at 4 o'clock. This allows other days of the month to be seen at a glance. The date is set using the pusher at 2 o'clock.
It is a very comfortable watch to wear and keeps accurate time. The leather strap is well made and has a signed buckle.
I particularly like the way the parts of the case and bezel have been polished as highlights against a brushed case.