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A&D Medical UA-611 vs Rossmax X3

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

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A&D MedicalUA-611RossmaxX3
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 during deflation for adults; exact maker manual specifies a pressure range of 30–260 mmHg and pulse range of 40–199 beats/minute. 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 specifies pressure accuracy within ±3 mmHg and pulse accuracy within ±5% of the reading; these specifications are separate from clinical validation
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the UK BIHS recommendation as manufacturer-declared equivalence to the UA-651 and says the equivalence study is unpublished.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 configurationSTRIDE BP lists the exact X3 model for adult home use through approved equivalence to Rossmax CF175, whose validation study used ESH-IP 2010 and was published in 2015; approved equivalence is not a direct X3 validation study
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 indication, loose-cuff and movement detection, hypertension risk scale, one-touch measurement and non-storing guest mode; inflation level is determined automatically. Irregular heartbeat indication does not identify AFib specifically
Cuff
Cuff fits22–32 cm24–40 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 cuffLatex-free Universal Cone Cuff with cuff holder; other sizes are available on request
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 listed60 readings per user, 120 total, with date and time and an average of the last three stored readings; oldest reading is replaced when a user's memory is full. Guest readings are not stored
AppNo Bluetooth; readings can be recorded manuallyNo Bluetooth; optional specially designed USB cable connects the data-link socket to Rossmax BP Manager PC software. Rossmax now states BP Manager PC software is discontinued and no longer available; the monitor remains usable independently
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 AAA batteries, DC 6 V; optional DC 6 V adaptor rated at least 600 mA. Automatic shutdown one minute after the last key operation
Design
Display detailsSystolic pressure, diastolic pressure and pulse shown with battery, irregular heartbeat and pressure/classification indicators57 × 73 mm LCD showing systolic and diastolic pressure, pulse, date/time, user memory, cuff and movement indicators
SizeApproximately 96 × 68 × 130 mm (width × height × depth); approximately 230 g excluding batteries96 × 139.7 × 63.2 mm (L × W × H); maker weight 246.0 g without batteries; IP21
In the boxUA-611 monitor, 22–32 cm SlimFit cuff, instruction manual and four AA batteries in the UK packMonitor, latex-free Universal Cone Cuff, batteries, instruction manual and string bag; adaptor and PC link are optional

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