... 5.Rechargeable battery Patient Monitor: Model#LDM-G3GDescription:Displayer :8.4" color TFT LCD screen with maximum 7-waveform display ... streamline outline design, portable, compact, lightweight 3. Operating menu with multi-language interface selection: English, Spanish, Portuguese, Chinese, French ... 100Hz Monitor 0.5 - 40 Hz Surgery 1.0 - 25 Hz Sweep speed(mm/sec): 12.5, 25, 50 Heart rate range: ...