7" color TFT screen, folding 90 degrees Built-in high dot matrix thermal printer with long life A standard patient event marker and a clinical event marking button to mark clinical events separately. Auto fetal movement are available. Multi-crystals, wide beam forming, high sensitivity ultrasound transducer, low ultrasound power AC or Li-ion battery More than 12 hours data storage, which can be recalled and reprinted. Standard: FHR, TOCO, FM Optional: Twins,FAS(Fetal acoustic simulator)