Record and store ECG signals, and display heart rate for home health care use. There is no subscription or hidden cost required to use the device & app. The device can be connected with PC via USB, with mobile phone via Bluetooth. The function of software PC and mobile phone includes sample mode and time setting, upload case, case review, measurement etc. Powered by Built-in large capability rechargeable lithium battery. The device is intended for OTC (over-the-counter) Use. Implanted pacemaker are not recommended to use with this device. This device is not intended to substitute for a hospital diagnostic ECG device. The Portable ECG Monitor is intended to record and store ECG signals, and display heart rate for home health care use. It is composed of host and USB cable, powered by Built-in large capability rechargeable lithium battery. The device can be connected with PC via USB, with mobile phone via Bluetooth protocol. The function of software PC and mobile phone includes sample mode and time setting, upload case, case review, measurement etc.