Noninvasive (continuous or intermittent) blood pressure measurements use volume clamping, applanation tonometery, pulse transit time, pulse wave velocity, radar, doppler-blood flow, echography, photoacoustics, bioimpedence, spectro-photometry, ballistocardiography, ECG and/or photoplethysmography .—Goto Cuff Based Solutions

COMPANYBLOOD PRESSURE PRODUCTMethod
AktiiaoBPMoptical sensor on wrist
SamsungGalaxy 9 optical sensorMy BP Lab
Sensogram TechnologiesSensotrack, ring andscanEarlobe or fingerscan-PPG
Health Stats International PE LtdA-Pulse Central Aortic Systolic BPwrist band-PW
Michigan State Universityc fingertip bp monitorSmart phone casing measures via oscillometric finger pressing
Sotera Wireless ref1 xref2 cNIBPwrist band -pTT
Bio BeatWrist and Chest Attachment Devicesphotoplethysmography and PWTT
BLUMIOArm band radar basedPWT from 2 points on arm
BOLD diagnostics    Lt and Rt blue tooth wrist bandsdelta (lt-rt) PWT
Aidar Health SPO2,3 lead ecg, RR, Temp and BP MouthLab devicedelta (lt thumb – upper lip) PWT
Viatom TechCheck Mepulse wave
TacSenseFootware
EdwardsClearsight systemvolume clamping
CNSystemsCNAP HDvolume clamping
ValencellSensor
Binah.aibvuefacial recognition
CharmcareH2-BP H2-PM
OmronHeartguardWrist watch
AppleiWatch + airpods
PPG + EKG + ?
MicrosoftWrist watch
Johnson and JohnsonWrist watch
Alphabet : Verily
Fitbit
Nest
Fit Bit WatchWrist watch
AmazonHalo Fit Wrist Watch/BandWrist watch
MobvoiWatchWrist watch