New SEIKO or RENATA watch battery 376 SR626W Hi-drain 377 SR626SW Lo-drain
New SEIKO, Seizaiken or Renata watch battery 376 SR626W or 377 SR626SW. 376 SR626W. 377 SR626SW. Both these batteries will work equally well in your watch, 376 is a Hi-drain battery & 377 is Lo-drain.