Repairing a vintage Seiko 4206 watch - Restoration of the smallest movement I have worked on so far!

Hi everyone! Im sorry for the week delay but I hop that you enjoy this video! This time im looking at a pair of broken vintage Seiko 4206's for my mothers birthday. Im curious how it will be like working on a watch movement this size and will I be able to fix it? Music from Uppbeat (free for Creators!): https://uppbeat.io/t/soundroll/all-th... License code: ZS3QNITBQWO5GHZG Chapters: 00:00 Introduction and background 01:19 Opening the watch 01:34 A luxury balance and service date 02:23 Uncasing 02:58 Removing the hands 03:12 Releasing the dial and close up 04:24 Disassembly of the movement front side 07:44 Disassembly of the movement back side 11:11 Watch cleaning process 11:55 Mainspring service 15:30 Shock and balance jewel cleaning and re-lubrication 17:16 Case cleaning 17:42 Case polishing 18:18 Movement back side reassembly 21:38 Movement front side reassembly 25:15 Bringing the watch back to life 27:12 Redialing the movement 27:58 Reattaching the hands 28:37 Installing a new crystal 28:59 Recasing the watch 29:19 Demagnifying 29:33 Timegrapher test 30:21 Closing up the watch 31:09 B-roll 31:28 Conclusion