Very nice 6139 version 👌🏻👍🏻👨🏻‍⚕️

Pulsograph scales are actually quite practical in a sense and generally much more useful in everyday life than tachymeter scales.

I have two watches with them, albeit none a Seiko 😊🤷🏻‍♂️

💰45 Marketplace Listings for Seiko›

Is there a doctor in the house?

By: RDSChicago : April 26th, 2026-15:38

The Seiko 6139-6020 "Pulsations" is a vintage 1970s "doctor's watch" featuring a 40mm stainless steel cushion case, a caliber 6139B automatic movement with 17 jewels and 21,600 bph, and a rotating inner "Base 10" bezel for calculating heart rates . Key fe...

You are on the roll today with your super cool Seikos!

By: Concord : April 26th, 2026-16:54

Thanks Concord

By: RDSChicago : April 26th, 2026-19:50

These vintage Seiko’s are a blast to collect!

Very nice 6139 version 👌🏻👍🏻👨🏻‍⚕️

By: KMII : April 26th, 2026-17:02

Pulsograph scales are actually quite practical in a sense and generally much more useful in everyday life than tachymeter scales. I have two watches with them, albeit none a Seiko 😊🤷🏻‍♂️ ...