1.Use10A multi-purpose ECG connector can be easily and quickly connected to monitor, electrocardiograph and other ECG products lead wire. 2.Built-in 18650 Large capacity lithium battery, power management module, in the use of the process to stable power supply, low interference output. Selection standard Micro-USB General interface power charger. 3.Using menu operation, parameter changes are simple, convenient and fast, and convenient for users to set up. 4.Use OLED The screen displays the contents of the menu. 5.Simple key operation, menu management, easy and convenient to use. Built in Chinese and English waveform settings, easy to understand waveform settings and parameter selection. Voltage: AC110V Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the , the Philippines,Taiwan and so on. Color: As Shown Material: plastic Package Contents: 1 x ECG Signal Generator 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.