ECG smart bracelet manufacturer/supplier/wholesale from China. Our smart bracelet H03 also came with ECG connectors and electrode patches , which means we have three methods to do ECG test: on wrist, on chest and held in both hands.Spovan High Quality ECG smart bracelet Spovan H03 Wholesale - Shenzhen Tianpengyu Technology Co., Ltd.,More than 70% of our products are exported to global market.