You'll need to charge the VTech parent unit every day because its battery lasts just a few hrs at a time. Fetalplus at-home fetal doppler is intended to monitor your baby's heartbeat from the primary trimester, as early as 9 weeks. You might not hear the heartbeat till the twelfth-14th https://jamesp593rcl9.blogunteer.com/31792600/detailed-notes-on-fetal-doppler-17-weeks-pregnant