Microlife W3 Comfort Blood Pressure Monitor User Manual

The Microlife W3 Comfort is an upper-arm blood pressure monitor featuring Microlife's patented AFIB detection technology, one-touch operation, large display with backlight, adjustable cuff (22-42 cm), memory storage for multiple users, irregular heartbeat detection, WHO indicator, date/time display, and automatic power-off. Powered by 4xAA batteries or optional AC adapter. Below are key sections for safety, features, setup, measurement, maintenance, and troubleshooting.

1. Features at a Glance 2. Safety Information 3. Package Contents 4. Specifications 5. Device Overview 6. Initial Setup 7. Taking a Measurement 8. Memory Function 9. AFIB Detection 10. Care & Maintenance 11. Troubleshooting

Features at a Glance

Key components: Main unit with LCD display, Adjustable upper-arm cuff, Air tube, 4xAA batteries, Storage case, User manual.

Feature	Description
AFIB Detection	Patented technology to screen for atrial fibrillation during measurement
One-Touch Operation	Start measurement with single button press
Large LCD Display	Clear readout with backlight for low-light conditions
Adjustable Cuff	Fits arm circumferences 22-42 cm (8.7-16.5 inches)
Multi-User Memory	Stores readings for two users with date/time stamp
WHO Indicator	Color-coded bar graph shows classification per WHO guidelines
Irregular Heartbeat Detection	Detects and displays irregular heartbeat during measurement
Automatic Power-Off	Conserves battery life when not in use
Date/Time Function	Built-in clock for accurate recording
Dual Power Options	4xAA batteries or AC adapter (optional)

Safety Information

Read all instructions before use. For accurate measurements and safe operation.

Do not use on infants, young children, or persons unable to operate device.
Consult physician before use if you have arrhythmia, pre-eclampsia, or other circulatory disorders.
Do not use during MRI examination or in oxygen-rich environments.
Keep device away from children and pets.

WARNING! This device is for home use only, not for professional medical diagnosis. Measurements are for reference; consult healthcare provider for medical decisions.

Package Contents

Unpack and verify all components are present.

Microlife W3 Comfort blood pressure monitor (main unit)
Adjustable upper-arm cuff with air tube
4xAA alkaline batteries
Storage case
User manual (this document)
Quick start guide

CAUTION! Do not use if any components are damaged or missing. Contact customer support.

Specifications

Measurement Method: Oscillometric
Measurement Range: Pressure: 0-299 mmHg, Pulse: 40-199 beats/min
Accuracy: Pressure: ±3 mmHg, Pulse: ±5% of reading
Cuff Size: 22-42 cm arm circumference
Memory: 99 readings per user (2 users total)
Display: LCD with backlight
Power Supply: 4xAA 1.5V batteries or DC 6V adapter (optional)
Battery Life: Approximately 500 measurements
Operating Conditions: Temperature: 10°C to 40°C, Humidity: ≤85% RH
Dimensions: Main unit: 135 x 105 x 65 mm
Weight: Approximately 350g (without batteries)

Device Overview

Front Panel: START/STOP button, MEMORY button, USER button, LCD display. Cuff: Velcro closure, air tube connector, artery marker.

Display Symbols: Systolic pressure, Diastolic pressure, Pulse rate, User indicator (1/2), Memory full, Battery low, AFIB symbol, Irregular heartbeat symbol, WHO indicator, Date/Time, Error messages.

Buttons: START/STOP (begin/end measurement), MEMORY (review stored readings), USER (switch between user 1 and 2).

Initial Setup

Prepare device for first use.

Insert batteries: Open battery compartment, insert 4xAA batteries observing polarity.
Set date/time: Press and hold MEMORY button for 3 seconds, use START/STOP to adjust.
Select user: Press USER button to choose user 1 or 2 (display shows U1 or U2).
Apply cuff correctly: Position artery marker over brachial artery on bare upper arm.

Tip: Rest for 5 minutes before first measurement. Sit comfortably with feet flat on floor.

Taking a Measurement

For accurate results, follow proper procedure.

Sit comfortably: Back supported, feet flat, arm resting at heart level.
Apply cuff: Position 1-2 cm above elbow, tighten snugly.
Start measurement: Press START/STOP button (cuff inflates automatically).
Remain still: Do not talk or move during measurement.
Read results: Systolic, diastolic, pulse rate display with WHO indicator.
AFIB detection: AFIB symbol appears if atrial fibrillation detected.
Automatic deflation: Cuff deflates and device stores reading.
Power off: Device turns off automatically after 1 minute.

WARNING! Do not inflate cuff when not wrapped around arm. Wait 2-3 minutes between measurements.

Memory Function

Review stored measurements for tracking.

Select user: Press USER button to choose U1 or U2.
View memory: Press MEMORY button to scroll through stored readings.
Each display shows: Measurement number, systolic/diastolic, pulse, date/time.
Memory full: "FULL" appears when 99 readings stored; oldest overwritten.
Clear memory: Press and hold MEMORY button for 5 seconds when viewing memory.

Note: Memory is maintained when batteries are replaced (briefly).

AFIB Detection

Microlife's patented technology screens for atrial fibrillation.

During measurement: Device analyzes pulse wave pattern. If AFIB detected: AFIB symbol appears on display with measurement results.

Important: AFIB detection is a screening tool, not a diagnosis. If AFIB symbol appears repeatedly, consult physician. Some arrhythmias may not be detected. Device may show AFIB symbol during excessive movement.

Care & Maintenance

Proper care ensures accuracy and longevity.

Clean device: Use soft, dry cloth. Do not use chemicals or immerse in water.
Store properly: Keep in storage case in dry place at room temperature.
Cuff care: Wipe with damp cloth if soiled. Do not machine wash or iron.
Battery replacement: Replace when low battery symbol appears.
Long storage: Remove batteries if not using for extended period.

CAUTION! Do not disassemble device. No user-serviceable parts inside.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display	Dead batteries	Replace all 4 batteries with new ones.
Error E1	Cuff not properly attached	Check air tube connection; rewrap cuff.
Error E2	Measurement error	Remain still; retake measurement.
Error E3	Pulse too irregular	Rest 5 minutes; try again.
Inaccurate reading	Wrong cuff position	Ensure artery marker is over brachial artery.
Cuff doesn't inflate	Air leak	Check tube connections; ensure cuff is tight.
Memory not working	Batteries removed too long	Replace batteries; memory may be lost.
AFIB symbol always on	Possible arrhythmia	Consult physician for evaluation.

Reset: Remove batteries for 5 minutes, then reinsert.

Service: Do not attempt repair. Contact Microlife customer service or authorized service center.