Storage and review of patient's trend data up to 36 hours which is never lost even when power is off.With audio and visual alarm.With LCD display of measurement and pleth.Three kinds of power supplies: AC power, built-in rechargeable Ni-MH battery, and common AA alkaline or rechargeable batteries.Patient's trend can be transmitted to a personal computer for display, saving, and printing.Suitable for adults, pediatrics, and neonate patients.