2.image displaying:freeze and defreeze,left and right,black and white change scrolling and far-field approaching,etc.
3.Measurement and analyze:electronic rule can show distance,area,volume,circumference,heart-rate,etc.BPD\CRL\GS,etc,seven kinds obstetric table available,connecting the mouse convenient and quick
4.Mark displaying:time,ID,13kind body marks,focusing position,frequency letter-note,etc
5.Piecing:piercing guiding function
6.Real-time clock displaying:show the date and time automatically
7.Supplu at optiom VCR,frozen switch,trackball,piercing accessories,9 inch monitor
Other types: YD-800, YD-800a, YD-800B, YD-600c, YD-500A, YD-500B, YD-500C, etc.