Seiko 4R15 movement
Seiko caliber 4R15 is an automatic watch movement produced from around 2008.
|Power reserve:||50 hours|
|Number of jewels:||22|
|Movement size:||27.4mm or 12"|
|Notes:||Together with 4R16, was intended as a replacement of the popular 7S26 movement. Also sold as NH15.|