When And How To UseYou can hear best from 12 weeks and up.Clean device after each use and replace in cradle.Note This is only for home use and is not a medical device. It should not replace regular Dr visits.Features:●Alarm function When FHR is out of the normal range.●High sensitive Doppler probe.●Big LCD display and two audio output.●Alarm function when FHR is out of the normal range●It can be recorded and connected the speaker.Specification:* Ultrasonic Frequency: 2.5 MHz*  Dimension:135* 70* 40mm*  Power Supply: 1. 5V Battery x 2 (Type: AAA)*  Continuous work time:≥8 hours*  PC Interface cable We provide 1 year warranty! So try this Monitor Risk Free! Scroll Up And Click The "Add to Cart" Button NOW!
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