Beurer BC 27 vs Omron RS4

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BC 27 compared with RS4

	BeurerBC 27	OmronRS4
Overview
Released
Released	–	–
Measuring
Type
Type	Wrist	Wrist
Clinically validated
Clinically validated	–	Yes
Irregular heartbeat detection
Irregular heartbeat detection	Yes	Yes
AFib detection or ECG
AFib detection or ECG	No	No
Method
Method	Automatic oscillometric wrist measurement during deflation. Exact UK item 65904, EAN 4211125659042. Current page heading and download labels identify BC 27 despite BC 28 in its SEO title and range tile; linked manual identifies type BC 27, technical model BC 28. First-sale date unconfirmed	Oscillometric wrist measurement; HEM-6181-E. First on-sale date not established
Accuracy
Accuracy	Manual display accuracy ±3 mmHg for systolic and diastolic pressure and ±5% for pulse. Systolic range 60–260 mmHg, diastolic 40–199 mmHg and pulse 40–180 beats/minute; cuff-pressure range 0–300 mmHg is separate	Maker's pressure accuracy ±3 mmHg and pulse accuracy ±5%; systolic range 60–260 mmHg, diastolic 40–215 mmHg and pulse 40–180 beats/minute
Clinical validation
Clinical validation	Exact manual states a maximum permissible clinical-test standard deviation of 8 mmHg, but does not identify a published validation study. Medaval reports no peer-reviewed clinical validation information for BC 27; consumer laboratory tests do not establish clinical validation. Headline validation omitted	Medaval attributes STRIDE BP adult self-measurement recommendation to HEM-6181 equivalence, while noting that its unpublished assessment cannot be verified against MDR requirements. Exact manual says pregnancy use has not been validated
Features
Features	Irregular-heartbeat warning, coloured classification scale, date/time, application-error messages and automatic switch-off after approximately one minute. No dedicated AFib screening, ECG, movement detection, heart-level position indicator, resting indicator or voice output	Wrist-height positioning symbol and locator bars, cuff-wrap, movement, hypertension and irregular-heartbeat indicators; no AFib screening or ECG. Web page calls the guide LED, while the exact manual describes a display symbol
Cuff
Cuff fits
Cuff fits	14–19.5 cm	13.5–21.5 cm
Cuff
Cuff	Fixed wrist cuff for 14–19.5 cm circumference; exact manual requires the supplied attached cuff. Heart-level positioning is a user instruction, not an electronic position sensor	Wrist circumference 13.5–21.5 cm
Connections and memory
Users
Users	2 (better)	1
Readings stored
Readings stored	60 per user	60
Bluetooth and app
Bluetooth and app	No	No
Memory
Memory	Two users with 60 dated readings each; oldest overwritten when full. Average of all stored readings and seven-day morning (05:00–09:00) or evening (18:00–20:00) averages. Selected user memory can be cleared	60 readings for one user; latest two/three readings within ten minutes can be averaged. Four weeks of morning averages, using the first three readings each morning
App
App	No Bluetooth or connection from the monitor. Scan & Save captures the displayed values using a phone camera into beurer HealthManager Pro; not automatic wireless transfer	No Bluetooth or OMRON connect transfer; a Bluetooth/app composition in the Dutch maker gallery conflicts with the exact manual and product specifications
Power
Power	Two 1.5 V LR03 AAA batteries. Exact linked manual claims approximately 170 measurements depending on blood pressure and inflation pressure; current product table says approximately 300. No mains operation established	Two AAA alkaline batteries included; approximately 300 measurements with new alkaline batteries
Design
Display details
Display details	LCD with black digits; current maker table gives 3.5 × 4.0 cm and claims illumination, while FAZ Kaufkompass's exact tested BC 27 has an unlit display. Illumination remains unresolved rather than assuming a hardware revision. Physical start/stop and memory controls, low-battery indicator; manual IP22	Digital LCD; IP22
Size
Size	Exact linked manual 84 × 60 × 29 mm (L × W × H), approximately 92 g with cuff without batteries. Current web/data sheet instead gives 60 × 84 × 55 mm and approximately 171 g excluding packaging, without equivalent weighing conditions; conflict unresolved	Approximately 93 × 62 × 20 mm (W × H × L, excluding cuff); manual gives 86 g without batteries, versus web table's rounded 90 g
In the box
In the box	Monitor with attached cuff, two AAA batteries, storage box and instructions. Current product page and data sheet also list a blood pressure record	Monitor, storage case, two AAA batteries and instructions 1/2; UK product page also lists a blood pressure pass