Table 1.

Available wearable technology

Device	Measurements (HR, ECG, Activity Hours, Temperature, Pulse Oximetry)	ECG Recording Duration	Regulatory Decisions/FDA Approval	Battery Life	Autodetect or Patient Triggered	Wear Location	Connectivity (Bluetooth, WiFi, Cellular)	Compatible OS
AliveCor Kardia mobile	ECG	30 seconds	FDA cleared	Connected to smartphone	Patient triggered	Handheld	Bluetooth	iOS, Android
Apple watch (Series 6)	HR ECG Activity Temperature Pulse oximetry	30 seconds	Heart-tracking features are cleared by the FDA but the oxygen monitor is not	Charging	Patient triggered	Wrist	Wi-Fi, Bluetooth	iOS
Beurer ME 90	ECG	30 seconds	FDA cleared	Battery	Patient triggered	Handheld	Bluetooth	N/A
Bittium Faros	ECG HRV	180 days	FDA cleared and CE marked	Rechargeable battery	N/A	Patch to the anterior chest or electrode	USB download	N/A
Cardiac Designs ECG Check	ECG	30 seconds	FDA cleared and CE marked	Rechargeable battery	Patient triggered	Handheld	Cloud server or email	N/A
CardiBeat and HeartCheck ECG Pen	ECG	30 seconds	FDA cleared and CE marked	AA battery	Patient triggered	Handheld	Information unavailable
CardioComm Solutions HeartCheck	ECG	30 seconds	FDA cleared	AA battery	Patient triggered	Handheld
COALA	ECG	Yes, 2 leads	FDA cleared	Rechargeable via charging station using wall adapter or USB	Patient triggered	Handheld	Wi-Fi, Bluetooth	iOS
Eko DUO	ECG	Yes, single lead, 15, 30. 60, 120 seconds	FDA cleared	Charging	Patient triggered	Handheld	Wi-Fi, Bluetooth	iOS, Android
Fitbit (Sense)	HR ECG Activity Pulse oximetry Temperature	30 seconds	FDA cleared	Charging	Patient triggered	Wrist	Wi-Fi, Bluetooth	iOS, Android
Garmin	Pulse oximetry Hydration HR	No	N/A	N/A	N/A	Wrist	Wi-Fi, Bluetooth	iOS, Android
Huawei (GT2 Pro)	HR ECG Activity Pulse oximetry Temperature	Information unavailable	National Medical Products Administration’s Class II medical device registration certificate (Chinese)	Charging	Unavailable	Wrist	Bluetooth	Android, ECG function is not compatible with iOS, Windows
MyDiagnostick	ECG	60 seconds	Not cleared	Charged by USB	Patient triggered	Handheld	USB connection by the physician	N/A
Omron HCG-801	ECG	30 seconds	FDA cleared	Battery	Patient triggered	Handheld	PC download	N/A
Oura ring	HR ECG HRV Skin temperature Activity Respiratory rate	Continuous	FDA cleared and CE marked	Battery	N/A	Chest	Bluetooth	iOS
Qardiocore	Activity HR HRV Temperature	No	Not cleared	Charging	Autodetect	Finger	Bluetooth	iOS, Android
Samsung (Galaxy 3)	HR Pulse oximetry Activity ECG	30 seconds	Cleared	Charging	Patient triggered	Wrist	Wi-Fi, Bluetooth	iOS, Android
Smartphone ECG Devices
VitalPatch 7-day patch	Body temperature ECG HR HRV Accelerometer Body temperature
Vivalink 96-hour ECG patch	ECG HR RR Accelerometer	96 hours to 7 days	FDA cleared	Battery	Unavailable	Patch to the anterior chest	N/A	N/A
Whoop	HR Respiratory rate	Information unavailable	FDA cleared	Charging	Autodetect	Wrist	Bluetooth	iOS, Android
Withings Move ECG https://www.withings.com/move-ecg	ECG Activity	30 seconds	ECG monitor of Move ECG has received a CE marking, following the medical device directive. Withings is working with the FDA to receive medical clearance.	Battery	Patient triggered	Wrist	Bluetooth	iOS, Android
Withings ScanWatch https://www.withings.com/scanwatch	HR ECG Activity Pulse oximetry	30 seconds	The Scan Monitor of the ScanWatch has received a CE marking for HR, ECG and SpO2 features following the medical device directive. Withings is working with the FDA to receive medical clearance.	Charging	Autodetect, patient-triggered	Wrist	Bluetooth	iOS, Android
Xiaomi (Amazfit Smart Watch 2)	HR ECG Activity	60 seconds	Not cleared	Charging	Patient triggered	Wrist	Wi-Fi, Bluetooth	iOS, Android
Zenicor	ECG	30 seconds	Zenicor’s system solution is CE marked Class IIa, and Zenicor Medical Systems AB is certified according to ISO13485.	Battery	Patient triggered	Handheld	Web-based service, Zenicor-ECG Doctor System	N/A
Physician Prescribed Devices
BardyDx CAM Patch	ECG	Up to 14 days of extended Holter monitoring	FDA cleared and CE marked	14 days	Autodetect, patient triggered	Patch to the anterior chest	Sent to physician	N/A
BioTel Heart ePatch	ECG	ePatch 1-channel 14 days ePatch 3-channel 5 days	FDA cleared and CE marked	14 days	Autodetect, patient triggered	Patch to the anterior chest or electrode	Sent to physician	N/A
BioTel Heart MCOT	ECG	Up to 30 days of near real-time continuous monitoring	FDA cleared	Rechargeable sensor and gateway	Autodetect, patient triggered	Patch to the anterior chest or electrodes or electrode	4G data networking Sent to physician	N/A
Medilynx	ECG	Yes, 3 leads up to 30 days	FDA cleared	Self-applied	Autodetect	Attach the electrode to the anterior chest and put the device in the pocket	Wirelessly transmitted via nationwide carrier networks	N/A
Boston Scientific Preventice Solutions	ECG	Yes, may be up to 30 days	FDA cleared	Will be applied by physician or self-applied	Autodetect	Patch to the anterior chest	Sent to physician	N/A
iRhythm Ziopatch/Zio XT/AT	ECG	Yes, up to 14 days	FDA cleared	Pre-charged in the mail and will be sent back by the patient	Autodetect but will be self-applied by the patient	Patch to the anterior chest	Sent to physician	N/A

CE = Conformitè Europëenne; ECG = electrocardiogram; FDA = Food and Drug Administration; HR = heart rate; HRV = heart rate variability; N/A = not applicable.