... ); local amplification function which can be enlarged under the real-time and froze;Image conversion: up/down, left/right, black ... -stage dynamic focusing with 4 transmit focus; support to launch multi-focus combination;Fixed characters and real-time clock and calendar display ... , BPD, HC, AC, FL, Fetus Weight;Heart menu: Distance, Time, Slope, Rhythm;Standard configuration: 10 inches CRT main unit 1set ...