1, the simulator built-in high-capacity lithium battery, can be repeated charging, can work for a long time; use no cost, no need to replace the battery,Can work continuously for more than 100 hours (ex factory). 2, using 10 universal ECG adaptor, lead wire with a variety of ECG monitor and connection. 3, the charger green light means charging is completed, the more bright red indicates that the lower the power. 4, increase the battery power automatic shutdown function, protect the lithium battery. Because it is a lithium battery, please try not to over discharge. Please note that the correct use of the charger, the charger voltage is not higher than 4.2V. 1, the normal ECG waveform 2, positive and negative triangle waveform Explain the operation of each waveform: 1,Normal ECG waveform:heart rate setting range: 10-200bpm; (initial value: 60 BPM)The signal amplitude fixed. 2,Positive and negative triangle waveform:(frequency range: 10-300bpm; initial value: 75 BPM) range: 0.1-4Mv (10:0.1mV, 400:4mV); 2 modes, one mode: positive wave, mode two: negative waveform; through a combination of buttons. Be carefulSignal amplitude setting range: 0.1mV-4mV (10:0.1mV, 400:4mV); (initial value: 100) Please note that this rate setting affect all waveforms. Please note that the signal amplitude settings can affect ECG waveform amplitude. Voltage: AC220V Color: As Shown Material: plastic Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Package Contents: 1 x ECG simulator 1 adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.