Bought this product because the reviews on quality were great but upon receiving this fetal Doppler it has rest assured given me more stress than relief!! Could not get the Doppler to pick up any heartbeat just static and scratchy sounds, took into my OBGYNs and had them try with the same results but once they used the Doppler that typically is used during my appointments had no problems picking up my baby’s heartbeat. Have messaged the company and have yet to hear anything back.