Features:
Portable design which is used deftly and conveniently
Strong bass, full channel loudspeaker, clear timbre
Big, visual and vivid LCD with dynamic pictures
Battery which is changed easily and distinguished automatically to make sure recharge safely
The Volume can be adjusted
The light can be adjusted at the night or dark place
Abnormal fetal heart rate will alarm automatically
Simple interface and convenient operation
Special mute function which create a comfortable environment