I was so anxious to use it I tried it as soon as I opened it. of course with no battery charge I did not pick up anything. So I plugged it in and waited for the night time.
After it charged for awhile I decide to try it again.
I layed flat on the floor and used Astroglide instead of the gel they sent, and it worked better. I heard the heartbeat, and it was about 160 BPM (beats per minute) which is great.
got it on video too.