Heartbeat ?

Es
I just heard my baby's heartbeat for the first time! It was absolutely beautiful! <3 sadly my husband couldn't be there to hear it because he had to work :( can't you buy a device online where you can hear the heartbeat at home anytime you want? I want it for my husband and of course myself (: where can I buy a good one that works well and that I can trust but for a good price?