... ion battery 4.folding 90 degrees 5. Built-in Printer Fetal Monitor with Twins Monitor AJ-3220E Features Compact and light ... clinical event marking button to mark clinical events separately. Auto fetal movement are available. Multi-crystals, wide beam forming, high ... TOCO, FM,Twins monitoring, Built-in Printer Related Product : portable fetal monitor AJ-3220 Fetal Monitor with Twins Monitor AJ-3220E