Info on Doppler please!!

Beba • Proud momma 1 girl one on the way and 2 stepsons I call my own! ❤️ love my 4 little ones!
Info on Doppler please!!!!
Do you have a Doppler? Where did you get it? Buy it? Stores? Internet? I would really like to have one but I have no clue where would I buy one.