This device allows you to listen to and record sounds made by baby in-utero; in particular heartbeats. It is powered by one 9V battery, included. Off-on-volume dial on the front, plus large blue button you hold down to activate the amplifier.
High acoustic sensitivity in a dual-sided chestpiece combines with durable, compact design to deliver versatile auscultation and rugged dependability. Tunable diaphragm responds with a simple press
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