1982 Seiko S229-5001 Pulsemeter Digital Watch - YouTube
Seiko PULSEMETER for $280 for sale from a Private Seller on Chrono24
TBT Two Seiko Pulsemeter Digital Chronographs
The Watch Co. on Instagram: “Seiko - S229-5000 Pulsemeter (Alien Watch) 1980-1989. . As early as 1983, Seiko had come out with their first watch equipped with a new…”