Brand N/A Model N/A Quantity 1 piece(s) per pack Color Blue + white Material Plastic Specification It brings you a clear sound of your baby's heartbeat but in order to protect your ears from unpleasant sound suggested you power on the device first before listening and make volume in middle place; It uses the Doppler effect at extremely low power; With this sophisticated technology you can listen to the unmistakable heartbeat of your baby record it and listen again. Certifications 00 Other Features Safe and easy to use; Powered by 1 x 6F22 9V battery (included) Packing List 1 x Fetal heart monitor 1 x Earphones (1m) 1 x Record cable (80cm) 1 x English user manual