E66 best smartwatch for ECG

Style	Smart wristband for temperature ECG
Screen Size	HD resolution 1.08 color screen
Screen Style	Touch operation
Master Chip	NRF52832
ECG	Ti129
PPG chip	Silicon labs
Bluetooth	4.0 BLE
Charge	USB plug and play charging
Case Top Cover	PC Powder Metallurgy
Case Bottom Cover	316 Stainless Steel
Strap	TPU
battery	105mAh
Work Time	5-10 days
Standby Time	20-30 days