Why my Seiko 5 automatic watch is not working?

A Seiko 5 watch is an automatic watch which its 7S26 / 7S36 movement is powered by the movement of your wrist.

To initially start your watch, you are required to swing your watch from side to side in a horizontal arc for about 30 seconds. Please note that if you have swung your watch for less than 30 seconds, it might not wind the mainspring to the fullest.

As everyone's wrist movement is different, from non-active to active, it might wind the watch's mainspring differently. For example, a person who loves to jog while wearing a Seiko 5 automatic watch will help in winding up the mainspring more and its power might last up to 3 days.

On the other hand, a person who sits in the office all day working with his computer might have less winding of the mainspring and its power might last up to just a few hours. Therefore, if you have left the watch un-touch for a few hours, it will stop. Kindly repeat the above steps again to restart your watch. It is recommended to wear the watch daily in order for watch to run everyday.

Alternatively, please refer to the Seiko blue guarantee booklet on 'How to start a mechanical watch'.