Light and small, convenient to operate HR, TOCO, FM can be displayed by NO. or curve Alarm system 7 inch TFT color displayú¼can be folded up Built-in thermal printerú¼long using life DSP technologyú¼recognize and measure HR in real time, the result is accurate and reliable The HR probe has a unique patented baby waking up technologyú¼the probe is waterproof and with high sensitivity. 12 hours data storage. It can be recalled and printed. Mark for special and clinical patient Low power of ultrasoundú¼harmless to baby. Wide voltage rangeú¿100-240Vú¬. 32*21*37cm.