Small Fetal heart beat indicator.
Easy to use
Heart rate Display ( 25*14 mm)
Clear sound ,and less noise
Can hang it by hang lace
Automatic Display Freezing After remove from the body
Light weight of 80g, batteries included
Runs on standard AAA batteries and continuous working time is 8 hours
Options: Mini speaker, Rechargeable battery &Charger ,Small bag (case)