Thought Id share these on the behest of the owner. This is a seiko midsize diver (rare orange dial) with a cal. 4205.
The 4205 is a 21600 bph movement, that offers hand winding, and QS date. Although tiny at 17mm, its the current workhorse movement found in all the ladies watches, and as noted above, the midsize divers.
With the roter removed.
A very tiny balance. note the balance BRIDGE (2 atachment points), as opposed to the normal single atachment point cock.
And lastly, partialy gutted. These smaller movements always offer a change of past, and some concentration.