Thanks for the feedback [MENTION=188524]Seattle Forrest[/MENTION]. According to DC Rainmaker having the PulseOx with the 745 really drains the battery. So for that reason I have it turned off. There is a setting on the watch to have PulseOx come during sleep, which I am thinking of doing. LIke you I am a numbers guy so I think I might find it interesting. At least for a couple of days anyway.