... . 12.1' high definition LCD 2. Can freeze, recall wave Maternal/Fetal Monitor System12.1' high definition LCDCan freeze, recall wave, review data ... , can be upgraded to KN-2000+D3:FHR,TOCO, FM, Maternal ECG,H.R., NIBP, Temp., Spo2 ,Pulse, RespirationCan continue monitoring ... and signal self-adaption management technology, accurately getFHROptional feature: twin Maternal/Fetal Monitor System