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* 2.5MHZ probe, a waterproofing and highly anti-jamming device * The probe can detect fetal heartbeats as soon as the fetus develops a heartbeat. * Patented noise control technology to restore fetal heart vowel. * High accuracy, error value plus or minus 1BPM. * Environmental protection low consumptionsafety rechargeable. * Be able to detect clearly the foetal heart beat from the very beginning, and display the rate instantly. |