Features: Safe to use at home without radiation, all in one design Two audio output can connect with headphone or the recording cable to make a permanent memorial for the baby Can record mother’s heartbeat, pacify baby no crying User friendly design, small and compact, high sensitivity, easy to operate Specification: Ultrasound frequency : 3 MHz Power: 9V dry battery Dimension: 120*105*65mm Machine N.W.: 0.13 kg Storage temperature: (-10~+40)°C Shipping method: Air, Sea, Road
