1.Pneumatically driven electronically controlled system 2.Built-in Ventilator, 5.7'' color LCD display Screen 3.4-Tubes flowmeters: O2 & N2O 4. 1 Vaporizer:Enflurane/Isoflurane/Sevoflurane (Optional:Halothane) 5. Respiration Mode:A/C,IPP(VCV),SIPPV(VCV),IMV,SIMV,MANU 6. Tidal Volume range: 50~1500ml 7. I/E Ratio: 8:1~1:10