A&D Medical UA-611 vs Rossmax Z1

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UA-611 compared with Z1

	A&D MedicalUA-611	RossmaxZ1
Overview
Released
Released	–	–
Measuring
Type
Type	Upper arm	Upper arm
Irregular heartbeat detection
Irregular heartbeat detection	Yes	Yes
AFib detection or ECG
AFib detection or ECG	–	No
Method
Method	Automatic oscillometric measurement with fuzzy-logic-controlled inflation; designed for adult home use; first on-sale date not established	Automatic oscillometric upper-arm measurement during deflation, with semiconductor pressure sensor. First retail date unresolved
Accuracy
Accuracy	Maker 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/min	Pressure range 30–260 mmHg and pulse 40–199 bpm. Maker accuracy ±3 mmHg pressure and ±5% pulse
Clinical validation
Clinical validation	A&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the UK BIHS recommendation as manufacturer-declared equivalence to the UA-651 and says the equivalence study is unpublished.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 configuration	Maker claims ESH approval. Medaval records equivalence to Rossmax CF175f rather than a published direct Z1 validation study, and notes unpublished equivalence evidence; headline validation omitted
Features
Features	Irregular heartbeat indicator, pressure progress bar, WHO classification indicator, stored-reading average and automatic power-off; irregular heartbeat indication is not a specific AFib diagnosis	Cuff-fit and movement detection, hypertension risk indication and generic irregular-heartbeat warning. No AFib-specific screening or ECG
Cuff
Cuff fits
Cuff fits	22–32 cm	24–40 cm
Cuff
Cuff	Supplied 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 cuff	Latex-free Universal Cone Cuff, 24–40 cm
Connections and memory
Users
Users	–	1
Readings stored
Readings stored	30	90 (better)
Bluetooth and app
Bluetooth and app	No	No
Memory
Memory	Last 30 blood pressure and pulse measurements, with stored-reading average; no separate user memories listed	One history of up to 90 readings with sequence numbers and an average of the last three. No user selector or dated reading history in current guide
App
App	No Bluetooth; readings can be recorded manually	No Bluetooth or data transfer; USB-C is a power connector
Power
Power	Four 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-651	Four AAA cells, DC 6 V. Optional USB-C DC 5 V supply rated at least 1000 mA; guide excludes USB PD chargers and battery charging. Automatic shutdown after one minute without key operation
Design
Display details
Display details	Systolic pressure, diastolic pressure and pulse shown with battery, irregular heartbeat and pressure/classification indicators	69 × 64.4 mm LCD in maker page. IP21
Size
Size	Approximately 96 × 68 × 130 mm (width × height × depth); approximately 230 g excluding batteries	100 × 86 × 68 mm (L × W × H); 218 g without batteries
In the box
In the box	UA-611 monitor, 22–32 cm SlimFit cuff, instruction manual and four AA batteries in the UK pack	Maker lists batteries, Universal Cone Cuff, instruction manual and string bag. Power adaptor and USB cable optional