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Comparison Microlife A1 Easy vs Microlife A90

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Microlife A1 Easy
Microlife A90
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Typeautoauto
Place of measurementshouldershoulder
Power source
batteries / mains /4xAA/
batteries /4xAA/
Battery indicator
Device dimensions
146x65x46 mm /weight: 317 g/
146х47х64 mm
Specs
Pressure measuring range20 – 280 mmHg20 - 280 mmHg
Pulse measurement range40 – 200 bpm40 - 200 bpm
Cuff dimensions22 – 42 cm22 – 32 cm
Recording readings1 pcs30 pcs
Features
Functions
pulse measurement
determination of arrhythmia
measurement error signal
auto switch-off
pulse measurement
determination of arrhythmia
measurement error signal
auto switch-off
Added to E-Catalogdecember 2013february 2012

Power source

Type of power source of the blood pressure monitor. Power is required only for automatic and semi-automatic models (see "Type") — mechanical ones work solely due to the muscular strength of the user.

Batteries. The blood pressure monitor is powered by replaceable batteries that have a standard size — for example, AA. Such devices are autonomous, because they do not require a mains connection, and batteries are purchased without problems and are easy to change, unlike built-in batteries (see below). On the other hand, batteries are usually not included in the package, and you have to buy them regularly, which is associated with corresponding expenses. An alternative is to buy the elements in the form of rechargeable batteries; they are quite expensive, however, having paid once for batteries and a charger, you no longer have to spend money on energy sources. Anyway, all blood pressure monitors with measurement on the wrist (see "Measuring place"), as well as some models of "shoulder" models, are powered by batteries.

— Batteries/mains. These blood pressure monitors offer dual power options, allowing them to operate on both replaceable batteries and a 230 V network. This versatility enables battery usage in remote locations and the convenience of plugging into the network in more conventional settings to conserve battery life. However, the use of the net...work requires a power source and adds bulk to the complete set. As a result, this type of power supply is exclusive to blood pressure monitors with measurements on the upper arm.

— Battery. These blood pressure monitors are powered by a proprietary, non-standard battery that is often non-removable. Similar to standard batteries, these power sources provide autonomy, allowing the device to function without nearby outlets. However, recharging the exhausted battery requires an electric source, typically an outlet, and the process is time-consuming. As a result, this power supply type is not widely adopted in blood pressure monitors and is primarily found in compact models where the use of standard batteries is technically impractical.

Battery indicator

Here, it refers to a battery level indicator on the blood pressure monitor display, showed as an icon similar to those found on mobile phones. While the charge indication is typically approximate, this feature allows users to monitor battery status and prepare for replacements in advance.

Pressure measuring range

The effective measurement range of a blood pressure monitor covers both "upper" and "lower" pressure values. Most modern devices have a lower limit within 0-20 mm Hg, which is adequate for the majority of cases. As for the upper limit, a device with a maximum value of 180 mm Hg is generally sufficient for individuals without a history of significant blood pressure spikes until old age or without serious illnesses. However, for those prone to substantial increases, it's advisable to consider devices with higher upper limit values, which can reach up to 280 mm Hg in modern blood pressure monitors.

Pulse measurement range

The blood pressure monitor's pulse rate measurement capability typically falls within a range of 30-40 to 180 beats per minute. While extending the lower limit is unnecessary for household blood pressure monitors, a higher upper limit may be essential for measurements during intense physical activity or for individuals with conditions causing significant heart rate acceleration, such as tachycardia.

Cuff dimensions

The cuff's applicable range includes both the minimum and maximum circumferences of the upper arm or wrist (see "Place of measurement"). Modern blood pressure monitors typically feature cuffs suitable for individuals with average physique, covering the majority of adult patients. However, for specialized cases, such as monitoring a child or someone with a larger bicep circumference, it is advisable to measure the arm circumference and compare it with the specified cuff sizes.

Small. The small cuffs are designed for a shoulder girth of 17-22 cm.

Standard. Standard cuffs cover a shoulder girth of 22-32 cm.

Oversized. Oversized cuffs have a girth of 22-36 cm.

Universal. Cuffs for both thin and large people. Universal cuffs provide a shoulder girth of 22-42 cm.

Large. Large cuffs with a girth of 33-46 cm are suitable for a full arm or a muscular shoulder of a conditional bodybuilder.

Recording readings

The number of results that can be simultaneously stored in the blood pressure monitor's memory. The ability to store several results in memory can be useful, for example, to compare pressure readings in the morning, afternoon and evening — these results do not have to be manually recorded or memorized.
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