Just go to fetaldoppler.net
Mine is an angelsounds one and its fab :)
Sonoline B. It's SO simple to use. The numbers of heart rate appear big on screen. Best investment I ever made.
Thanks you guys... I had originally went to amazon, and a couple of dopplera had bad ratings
Go to clinicalguard.com I know a lot of mommies who have boughten a doppler off of that site and not one complaint.
When I get the money I'll be buying one off of that site. :)