... The internal line thermal printer can records FHR ,TOCO ,The life exceed over 20years5. A standard patient event marker and a ... clinical event marking button to separately mark Clinical events6. Auto Fetal movement are available7. Multi-crystals ,wide beam form, high ... sensitivity ultrasound transducer ,low ultrasound power, Safer to the fetal 8. AC or LI-battery operated9. More than 12 hours ...