Feature: Foldable 12.1 inch TFT LCD high-brightness screen with a wide viewing angle and large numerics 12 elements / 1 MHz water proof pulse Doppler transduceroptionfor accurate detection Event marker for easy documentation of events and kick counts Fetal Movement Profile (FMP) detects and automatically records gross fetal body movements On-screen scrolling for viewing stored fetal traces Twin ultrasound monitoring capability Configurable audible and flashing fetal heart rate alarms Twin signal overlap alarm function Built-in high speed thermal printer, printing width can be set to 112mm,150mm and 210mm 24-hours memory for fetal traces Supporting TCP/IP or wireless connection to the central monitoring station Internal Li-ion battery power or AC power from external power supply