It's no good to me anymore, and seems to cause me more worry than anything else. Im looking to get rid of the **summer** fetal heart monitor; It comes boxed with 2 pairs of headphones, and a CD rom; plus the monitor of course. Cost £30 from argos and im willing to accept any offers, so if you're interested, PM me. Im getting rid of it because, although it gave some reassurance at the beginning, I now find myself COUNTING Nickys HB, and If I feel it's too slow (not like I'd actually have a clue), I start panicking... It's only been used a few times and still has the original battery.... I must stress that in the argos book, it states you have to be 21+weeks pregnant for it to work accurately. I do not know how true this is as I was a few weeks over 21 weeks when I brought it, but I think the majority of them do actually come with warnings like that.