Seiko Lord Matic

Seiko Lord Matic JDM - a series introduced by Seiko in 1968, was a mid-to-high range of automatic watches featuring the newly developed 56xx movement. 

There were actually two distinct LM series: The original LM line from the Suwa factory, using the 56xx movement and LM Special, introduced a few years later by the Daini factory, which utilized the 52xx movement.

The 56xx family is a big and famous range of automatic movements, that equipped not only the Lord Matic but the King (5621, 5625, 5626) and Grand Seiko (5641, 5645, 5646) as well.

They all had the stop second and the manual winding feature. The Lord Matic was available in time-only, date-only or day & date configuration, with respectively the 5601, 5605 and 5606 calibre. The frequency of these movements is 21,600 bph and they had 23 or 25 jewels. The 5606 has a double language day disc, one of the language always being English.

Seiko lord matic jdm has Japanese day date - but the day and date quickset is one of (if not the only) the weaknesses of the calibre.

Unfortunately, Seiko had the bad idea to use a plastic transfer wheel which tends to break or unseal from its metal support when you try to set the day or the date between 11 pm and 2 pm - this is often a problem when finding a nice 5606 LM