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A&D Medical UA-611 vs Omron M3

Every spec side by side, from each maker's published figures.

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A&D MedicalUA-611OmronM3
Overview
Released––
Measuring
TypeUpper armUpper arm
Clinically validated–Yes
Irregular heartbeat detectionYesYes
AFib detection or ECG–No
MethodAutomatic oscillometric measurement with fuzzy-logic-controlled inflation; designed for adult home use; first on-sale date not establishedAutomatic oscillometric upper-arm measurement; HEM-7154-E, distinct from M3 Comfort HEM-7155-E and M3 Comfort AFib HEM-7196-FLE. First on-sale date not established
AccuracyMaker specification ±3 mmHg pressure and ±5% pulse; pressure range 0–299 mmHg, systolic 60–279 mmHg, diastolic 40–200 mmHg and pulse 40–180 beats/minMaker's pressure accuracy ±3 mmHg and pulse accuracy ±5% of displayed reading; systolic range 60–260 mmHg, diastolic 40–215 mmHg and pulse 40–180 beats/minute
Clinical validationA&D UK claims ESH 2010 validation; Medaval identifies the UK BIHS recommendation as manufacturer-declared equivalence to the UA-651 and says the equivalence study is unpublished. The US Validate BP listing covers UA-611 under ANSI/AAMI/ISO 81060-2:2018 with different cuff options; this does not establish direct validation of the supplied UK cuff configurationMaker manual states an 85-subject clinical investigation under EN ISO 81060-2:2014 and compliance with 2014 and 2019+A1:2020; K5 is used for diastolic pressure. No additional population validation is inferred, and blood pressure validation does not establish diagnostic accuracy of rhythm indicators
FeaturesIrregular heartbeat indicator, pressure progress bar, WHO classification indicator, stored-reading average and automatic power-off; irregular heartbeat indication is not a specific AFib diagnosisIrregular-heartbeat, body-movement, cuff-wrap and high-blood-pressure indicators. No AFib detection or ECG recording; the manual supports displaying the average of the latest two or three readings taken within ten minutes, despite the UK web table marking averaging as absent. This is distinct from automatic consecutive three-reading measurement; the UK page's generic Upper Arm BPM & ECG category label does not describe an ECG capability on this model
Cuff
Cuff fits22–32 cm22–42 cm
CuffSupplied latex-free and metal-free SlimFit cuff fits 22–32 cm; optional large cuff fits 31–45 cm, sold separately; UK manual says this model is not designed for a small cuffIncluded HEM-RML31 Easy Cuff, 22–42 cm arm circumference; approximately 145 × 594 mm, 750 mm tube and 170 g
Connections and memory
Users–2
Readings stored3060 per user
Bluetooth and appNoNo
MemoryLast 30 blood pressure and pulse measurements, with stored-reading average; no separate user memories listedUp to 60 readings per user for two users; guest mode takes a measurement without saving it
AppNo Bluetooth; readings can be recorded manuallyNo Bluetooth or OMRON connect support
PowerFour AA 1.5 V batteries; maker claims approximately 700 measurements with LR6 alkaline batteries or 200 with R6P manganese batteries at 180 mmHg and 23°C. UA-611 has no DC socket; the optional adapter in the shared manual applies only to UA-651Four AA batteries included, DC 6 V / 4 W; optional compatible AC adapter sold separately. Approximately 1000 measurements with new alkaline batteries and the included cuff, depending on batteries and cuff
Design
Display detailsSystolic pressure, diastolic pressure and pulse shown with battery, irregular heartbeat and pressure/classification indicatorsDigital LCD; monitor IP20
SizeApproximately 96 × 68 × 130 mm (width × height × depth); approximately 230 g excluding batteriesApproximately 105 × 87 × 153 mm (W × H × L); approximately 310 g without batteries
In the boxUA-611 monitor, 22–32 cm SlimFit cuff, instruction manual and four AA batteries in the UK packMonitor, HEM-RML31 cuff, four AA batteries, storage case and instruction manuals 1/2

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