Waterproof Sports Smart Watch with ECG E400 - Bluetooth 5.1, IP68, 1.39", 280mAh The exquisite smart watch E400 allows you to monitor the most important parameters of your cardiovascular system, such as heart rate, ECG, and PPG.
Waterproof Sports Smart Watch with ECG E400 - Bluetooth 5.1, IP68, 1.39", 280mAh The exquisite smart watch E400 allows you to monitor the most important parameters of your cardiovascular system, such as heart rate, ECG, and PPG.
