LCD display RTC (Real Time Clock) display Backlight control and automatic power-off function tor power saving SpO: and Pulse rate measurement Display numeric and waveform of SpO: simultaneously Long battery life-up to 48 hours on 4 “AA” or 36 hours on Ni-MH rechargeable batteries Powerful data storage capacity Up to 300 hours SpO: data (1 read per 2 seconds) can be transferred to PC by Patient Care Viewer for storage, review and printing The latest 10 minutes trend graph and table of SpO: and Pulse Rate can be reviewed in the screen Audible and visual alarm Pitch tone