Product information CONTEC 2.0MHz Fetal Doppler Baby Heart Monitor feature: • Highly sensitive probe: working frequency: 2.0 MHZ. • Use peace of mind：no radiation ultrasonic output power <20 mW. • Large detection range：Accurate detection area range <157 mm². • Intelligent noise reduction：Using advanced filter noise reduction technology to reduce other abdominal noise. • Screen display: High-resolution LCD screen with large fonts. • Free choice of three counting modes-①Manual counting. ②Real-time counting ③Average counting • Sound prompt: You can use the speaker to listen to the sound of the baby's heartbeat, or you can use the earphone to listen. • Small size, easy to carry, pay attention to health anytime and anywhere. Easy to use, easy to carry and travel at home. >>The detection of fetal heart rate during pregnancy can help pregnant mothers reduce the anxiety and relaxation of mothers with adverse pregnancy history, and reduce the trouble of going out for medical treatment.<< Specification: Product Name: CONTEC 3.0MHz Fetal Doppler Baby Heart Monitor Voltage: DC 3V Battery: 2pcs AA battery(not included) Probe operating frequency: 2.0MHz±10% Fetal heart rate range: 50-240 BPM (per minute) Maximum output sensitivity: 2600Db Ultrasonic output intensity: <5mW/cm2 Ultrasonic output power: P<10Mw Peak negative sound pressure: P-<0.5MPa Output beam sound intensity: lsptac50mW/cm2 Effective ultrasonic emission area: 208mm2±15% Package List: 1 * Fetal Doppler Baby Heart Monitor 1 * gel 50g 1 * Manual Our store will deliver the goods within 24 hours (if there is any special problem that delays the delivery, we will contact you as soon as possible). Our store is closed from Saturday to Sunday, no delivery will be made, please forgive me.