? 8.4"TFT LCD screen, folding 70 degree ? FHR and TOCO display in curves and digitals ? Normal FHR range with adjustment in highlight ? FHR display for twins as separate or overlap ? 4types self-defined event marks ? 10 hours data memory ? Built-in high resolution and long life thermal printer ? Waterproof probes for parturition under water ? Touch screen with intuitive user interface for easy operation (option) ? Built-in PC network connection capability and telemetry network(option) ? Twins monitoring function(option)