XinKaishi is the first acoustic fetal listening device optimized for safety, performance and the emotional empowerment of expecting mothers. Unlike traditional fetal monitoring devices, Xinkaishi uses passive technology and requires no transmission gel, wires, or medical expertise to operate. It connects via Bluetooth to a mobile app that detects and visualizes the frequency of the baby’s heartbeat. Supporting mothers throughout their pregnancy, the app presents personalized and contextually relevant health information validated by medical experts. Mothers can record, save and share heartbeats as well as view a chart mapping how the heartbeat evolves over the gestation period. The device is the size of a large egg and is ergonomically designed to fit in the palm of a mother’s hand. The body is made of ABS/Polycarbonate with a santoprene overmold for a soft and stable grip. It also includes a hypoallergenic santoprene membrane that makes direct contact to exposed skin and is optimized for transmission of the acoustic signal. Xinkaishi is the trusted companion for expectant mothers. It is easy to use, portable and provides on-demand access to unforgettable moments of pregnancy.