Table 6. Summary of Available Wearable Biosensors^a.

Sensor Name	Company	Application	Hardware	Sensors	Computed Biometrics	Comms.	Footprint (mm)	Batt. Life	Applied Signal	FDA Approved
BX100	Philips	COVID-19 monitoring	Chest worn patch	2 ECG BIA electrodes	Activity level/type, posture	BT	96 × 61	5 days	16 μA	Y
									40 kHz
Body+	WiThings	Smart scale	Stand on scale	4 BIA electrodes	BF, BMI, Water %, MM, BM	BT/Wifi	327 × 327 × 23	18 months	0.5 mA	N
									50 kHz
Cova2	toSense	Clinical & remote monitoring	Necklace	2 ECG/BIA electrodes	SV, CO, CF, ECG, HR, RR	BT/Wifi	n/a	n/a	4 mA	Y
									70–100 kHz
Aura Band	Aura	Sports monitoring	Wrist Band	2 BIA electrodes	BC, hydration	BT	44 × 25 × 5	7 days	n/a	N
									10–500kHz
Ebio Unit	Shimmer	COVID-19 and sports monitoring	Chest worn device	5 ECG/BIA electrodes	RR, RV, CF	n/a	n/a	48 h	n/a	N
									32 kHz
Band2	Inbody	Sports monitoring	Wrist band	2 BIA electrodes	BF, MM	BT	19 × 26 × 10	14 days	n/a	Y
Enduro	Physioflow	Cardiac output monitoring	Chest worn device	6 BIA electrodes	CO	BT	115 × 85 × 18	6 h	4.5 mA	Y
									66 kHz
μCor3	Zoll Medical	Cardiac event monitoring	Under arm or chest patch	2 ECG/BIA electrodes	TI, HR, RR	BT	69 × 53 × 12	5 days	n/a	Y
									0.5 kHz-2.5 GHz
ROBIN	Onera Health	Sleep apnea detection	Chest work patch	4 BIA electrodes	RR	BT	65 × 20 × 130	n/a	0.1 mA	N
									8–160 kHz
Vantage M	Polar	Sports monitoring	Wrist band	4 BIA electrodes	HR	BT	46 × 46 × 12.5	1.25 days	n/a	N
ONE SMARTDIET	ONESOFTDIGM	Body composition analysis	Hand-held	4 BIA electrodes	BF, MM, BMI, BWV	BT/Wifi	75 × 31 × 17	7 days	150 μA	N
									50 kHz
Galaxy Watch 4	Samsung Electronics	Body composition analysis	Wrist band	2 BIA electrodes	BF, MM, BWV	BT	n/a	n/a	30 μA	N
									50 kHz

^aAbbreviations: BIA, Bioimpedance analysis, BC: total body composition, BF: body fat, BM: bone mass, BT: Bluetooth, BWV: body water volume, CF: chest fluids, CO: cardiac output, HR: heart rate, LBM: lean body mass, MM: muscle mass, RR: respiratory rate, RV: respiration volume, SV: stroke volume, TI: thoracic impedance).