I finally got the monitor in the mail. The dear who sent it failed to pack it properly and it bounced around in the box the whole trip and the outer box was crushed when I got it (grrr...). Everything's in working order, though! I think AF is due... well I'm not sure anymore. My cycle has become unpredicable the last 2 months. I Oed 5 days ago, so not much more than 10 more days (I assume). I've already read the instructions twice. I am a monitor expert.