Tips for use: The best time to monitor is after a meal or at noon! This time period is the active period, easier to sense the heartbeat. Product Description Product name: Fetal Doppler Material:Plastic Display: TFT Screen Frequency: 3.0 MHz Power supply: 2*AA Alkaline Battery Color: Pink/Gray Type: Doppler Ultrasound Equipment Weight: 269g Measurement Range: 50-210 bpm Speaker: Adjustable Volume Quality Certification:CFDA Safety standard:IEC60601/GB9706.1 Package Include: Packing box Blister box Qualified Card Fetal Doppler Operation Manual

Easy To Use, High Performance Baby Heartbeat Monitor The probe of this Fetal Doppler is not only waterproof, but also has high sensitivity and accurate detection. High quality LED display screen can enable clear readings for viewing convenience No radiatlon,Safe to use,Durable and hygienic ABS material.