My 4R36 is still working, I recommend this movement if you work. : r/WatchHorology
SEIKO 5 Sport Automatic 4R36-07G0 With Day and Date Dial - Etsy Denmark
Genuine SEIKO 4R36 NH36 NH36A Automatic watch Movement Mens Parts for Wrist Watch Replace Accessories - Price history & Review | AliExpress Seller - OlgWatchsTool Store | Alitools.io
Seiko Caliber 4R36 Watch Movement | Caliber Corner
Seiko Prospex Automatic Diver 200m 'Baby Tuna' 4R36 (Black ref. SRP655K1 & Blue ref. SRP653K1) - Review with Live photos & Price - Monochrome-Watches