5 ms·
the watch measures from two locations actually, through the wrist and through a finger on the crown. you're still right that 3 (and more) is better.
by mach5 8y ago
the watch measures from two locations actually, through the wrist and through a finger on the crown. you're still right that 3 (and more) is better.
- skizm 8y agoFor each of the three locations I mentioned, you also need to contact the portable ECG with your finger. The finger is being used to create a closed loop. It is not a measurement site.