Literally just bought it. Tested it on my heart first and it worked well. I heard the placenta (wind noise) and the heartbeat however the heartbeat was fainter. It specifically says that may happen and it's recommended to use it at the 16 week mark and I myself am only 5 weeks. So to be that early and hear the placenta and somewhat of the heartbeat already before my actual ultrasound is pretty amazing. I wish it had a speaker as well. You can buy one so everyone in the room can hear but it can't be connected to the new smartphones (apple) as they suggest since apple changed the USB port. Clear sound just wish you had the option of sharing it with the who's in your house and being personal with the headphones. I recommend using ultrasound gel off Amazon. Even though you can hear without it, the sound is much clearer with it plus it glides around your tummy better so you can find baby.
