this watch is a great value for money but one person warned me about the breaking of the quickset of the plastic part especially with the 5626. People who restore vintage Seikos are not many. I will see how my KS chronometer works and how well it quicksets. But if the watch was well cared , it is generally a movement that is very durable, accurate and reliable. You never quick set a Seiko between 8pm and 2am because this is the "death zone" on a seiko and it is best way to break a mechanism. The only independant certified Seiko masterwatchmaker in Europe which is Edouard the watchmaker told me the following always quickset a seiko at 6h30 am or 6h30 pm. Here is a video explaining the fault with thsi movement
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