I bought an AngelSounds feotal heart doppler via ebay & love it. I borrowed my friends at 14.5wks with my last pg & found h/beat, 1wk later bought my own. With this one, I found it at 10w5d, but they say around 12wks on it can be detected. My obgyn was impressed that I was able to find it earlier than 13-15wks, hehe. After this one, i'll prob sell, as dont think we'd go for a 3rd.