Although our work is only a prototype, but it is more practical, more convenience, but also more popular. First: a special out looking, has a lovely circular shape, it will let you to think of a cute baby Second: not afraid of loss, the installation of GPS, no longer afraid to find this device. Third: easy to carry, can be taken to anywhere, do not worry to go the hospital to hear the ultrasound. Fourth: convenient links, after use, can be used to upload to smart phone , allowing physicians to hear. Fifth: easy dismantling, after turning the coupling agent can be applied directly to the skin to facilitate the reception of ultrasound.