Gymark Home Use Fetas Doppler Monitors Handheld and Portable Heart Rate Detector LED Screen Digital Display Speaker Monitor

Feature: Large screen: 1.8" screen with a more intuitive and easy-to-read curve. Easy to use:Easy to use digital display at home. Lightweight and portable built-in: speaker with volume control, on / off switch, volume control, headphones and speaker are all doable. Easy and convenient to use: With large backlit LCD screen, high fidelity, clear sound Nice sound: Using clear tuning chips, the sound is more realistic Specifiction: Measuring range: 50-230bpm Measurement error: about 2bpm Probe frequency: 2.0MHz Product weight: 0.369lb Product size: 5.5 x 4.1 x 1.18" Screen color: black and white How to use: 1.Before using it for the first time, make sure 2 batteries are in 2.Press the power button to power on, then adjust the volume 3.Lie flat with a cushion pillow, keep legs straight and relax 4.Attach the probe to the abdomen to locate the position and find out the best direction to the heart 5.After hearing regular heart sound, the value will display on the screen in real time 6.Time weeks: not less than 12 weeks Note: Please allow minor errors due to manual measurement. Item color displayed in photos may be showing slightly different since monitors are not calibrated same. Package Include: 1pc of Fetal doppler (not included battery)

Large screen: 1.8" screen with a more intuitive and easy-to-read curve. Easy to use:Easy to use digital display at home. Lightweight and portable built-in: speaker with volume control, on / off switch, volume control, headphones and speaker are all doable. Easy and convenient to use: With large backlit LCD screen, high fidelity, clear sound Nice sound: Using clear tuning chips, the sound is more realistic