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Beurer BM 81 easyLock vs Microlife BP B4 BT

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

Better figure, where one is clearly better

BeurerBM 81 easyLockMicrolifeBP B4 BT
Overview
Released––
Measuring
TypeUpper armUpper arm
Clinically validated–Yes
Irregular heartbeat detectionYesYes
AFib detection or ECGNo–
MethodAutomatic oscillometric upper-arm measurement during inflation; exact BM 81 easyLock item 65511. First on-sale date unconfirmedAutomatic oscillometric upper-arm measurement; first on-sale date not established
AccuracyMaker display accuracy ±3 mmHg for systolic and diastolic pressure and ±5% for pulse; systolic range 50–250 mmHg, diastolic 30–200 mmHg and pulse 40–180 beats/minute. Cuff-pressure range 0–300 mmHg is not the systolic measuring rangeMaker manual specifies static pressure accuracy of ±3 mmHg and pulse accuracy of ±5% of the readout value; distinct from clinical validation
Clinical validationMaker claims clinical validation and ESH recognition; Medaval's April 2025 list places this model among monitors with internal or unpublished validation. Independent published exact-device validation not established; headline validation flag omittedExact BP B4 BT appears on STRIDE BP as an approved equivalent device for home use in adults and people with diabetes, with a validated 22–42 cm cuff; the listing does not identify an underlying direct-study model
FeaturesCuff-fit check, irregular-heartbeat warning, coloured LED risk indicator, date/time and automatic switch-off. No ECG or haemodynamic resting indicator; not a continuous ambulatory monitorMAM averages three successive measurements; irregular heartbeat indication, cuff fit and movement checks, classification scale and date/time
Cuff
Cuff fits24–40 cm22–42 cm
CuffIntegrated easyLock upper-arm cuff with press-and-turn adjustment for 24–40 cm circumference; no separate tube or hook-and-loop fastenerSoft M–L upper-arm cuff
Connections and memory
Users22
Readings stored120 per user99 per user
Bluetooth and appYesYes
MemoryTwo users with 120 dated readings each; oldest overwritten when full. Averages of all saved readings and morning/evening readings from the latest seven days. All readings saved to a user memory; deletion clears that user's entire memory, without individual-reading deletion or guest modeExact manual and UK page feature heading specify 99 readings per user for two users; a conflicting UK specification bullet says 30 each. Average of all stored readings; oldest reading overwritten when full
AppBluetooth Low Energy transfer to beurer HealthManager Pro; can be used without the app. Current instructions specify compatibility with Bluetooth 4.0 smartphones/tablets, not an exact radio-generation claimBluetooth 5.0 transfer to Microlife Connected Health+ on Android and iOS
PowerFour 1.5 V AAA LR03 batteries included; approximately 300 measurements depending on blood pressure and inflation pressure. Battery replacement retains readings but requires resetting date/time. ETM's AA battery table conflicts with the exact maker manual and PC-WELT's AAA descriptionFour 1.5 V LR03 AAA batteries or optional DC 5 V, 1 A adaptor through USB-C; NiMH batteries supported but must be charged externally
Design
Display detailsNon-illuminated LCD with white digits and coloured LED classification indicator; maker display dimensions 3.4 × 7.9 cm. Battery-level and cuff-fit indications; IP22LCD showing pressure, pulse, user, date/time and stored-reading indicators
SizeCurrent manual gives 143 × 91 × 22 mm (L × W × H), approximately 280 g with cuff but without batteries. Web table reverses length/width and gives 327 g excluding packaging without the same battery condition141 × 94.5 × 56 mm; maker weight 260 g including batteries
In the boxMonitor with integrated 24–40 cm cuff, four AAA LR03 batteries, instructions and quick-start guide; no storage bag. UK product page additionally lists a blood pressure recordMonitor, soft 22–42 cm cuff, storage bag, instruction manual and four AAA alkaline batteries

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