2 ms·
... like this heart rate monitor: http://www.azumio.com/apps/heart-rate/ http://www.azumio.com/apps/heart-rate/ (I didn't think it was possible until I saw it
by asciimo 14y ago
... like this heart rate monitor: http://www.azumio.com/apps/heart-rate/ http://www.azumio.com/apps/heart-rate/ (I didn't think it was possible until I saw it myself.)