Introduction
Thank you for choosing the NISSEI WS-1011 Electronic Wrist Blood Pressure Monitor. This device is designed for easy and accurate measurement of blood pressure and pulse rate at the wrist. It features a large display for optimal readability, an irregular heartbeat detector, and memory for two users, each storing up to 60 measurements. This manual provides essential information for safe and effective use of your blood pressure monitor.
Important Safety Information
Please read all instructions carefully before using this device. Keep this manual for future reference.
- Consult your physician before using this device if you have any medical conditions, especially if you have severe circulatory problems, diabetes, or kidney disease.
- Do not use this device for diagnosis or treatment of any health problem or disease. Always consult a medical professional for interpretation of blood pressure readings.
- Do not use the device on an injured wrist or a wrist undergoing medical treatment.
- Avoid taking measurements immediately after exercise, bathing, or consuming alcohol or caffeine.
- Keep the device out of reach of children and pets.
- Use only the specified batteries. Do not mix old and new batteries or different types of batteries.
- Do not disassemble or attempt to repair the device yourself. Contact customer support if service is required.
Package Contents
Verify that all components are present and in good condition:
- NISSEI WS-1011 Electronic Wrist Blood Pressure Monitor
- Storage Case (typically included)
- Instruction Manual
- Batteries (may be included, check packaging)
Product Overview
The NISSEI WS-1011 is a compact and user-friendly wrist blood pressure monitor. Key features include:
- Large Display: For easy reading of blood pressure and pulse rate.
- Irregular Heartbeat Detector: Alerts the user to potential arrhythmias.
- FUZZY Inflation System: Ensures comfortable and accurate inflation.
- Dual User Memory: Stores 60 measurements for each of two users.
- Universal Cuff: Fits wrist circumferences from 12.5 cm to 21.5 cm.
- WHO Classification Indicator: Displays blood pressure according to World Health Organization guidelines.

Image 1: Front view of the NISSEI WS-1011 Electronic Wrist Blood Pressure Monitor, showing the large display and control buttons.
Setup
1. Battery Installation
The NISSEI WS-1011 requires 2 AAA batteries for operation.
- Open the battery compartment cover located on the back of the device.
- Insert 2 AAA batteries, ensuring the correct polarity (+ and -) as indicated inside the compartment.
- Close the battery compartment cover securely.
Note: If the low battery indicator appears on the display, replace both batteries with new ones.
2. Setting Date and Time (if applicable)
Refer to the specific instructions in your device's manual for setting the date and time, as this varies by model. This ensures accurate time-stamping of your measurements.
Operating Instructions
1. Before Taking a Measurement
- Avoid eating, drinking alcohol, smoking, exercising, and bathing for 30 minutes before measurement.
- Rest for at least 5 minutes before taking a measurement.
- Sit in a comfortable position with your feet flat on the floor and your arm supported.
2. Applying the Wrist Cuff
- Remove any tight clothing or accessories from your left wrist.
- Place the monitor on your left wrist with the display facing upwards. The cuff should be positioned approximately 1-2 cm from your hand.
- Fasten the cuff snugly around your wrist using the hook-and-loop closure. Ensure it is not too tight or too loose.
- Position your wrist at heart level. You can support your elbow on a table and place your palm upwards.
3. Taking a Measurement
- Press the START/STOP button. The cuff will automatically inflate.
- Remain still and silent during the measurement.
- Once the measurement is complete, the cuff will deflate, and your systolic pressure, diastolic pressure, and pulse rate will be displayed.
- The measurement will automatically be stored in the selected user's memory.
- Press the START/STOP button again to turn off the device, or it will automatically power off after a period of inactivity.
4. Memory Function
The device stores 60 measurements for each of two users (User 1 and User 2).
- Selecting a User: Before taking a measurement, use the USER button (or similar, refer to device buttons) to select User 1 or User 2.
- Recalling Measurements: With the device off, press the MEM button (or similar) to view stored readings. Each press will cycle through previous measurements.
- Clearing Memory: Refer to your device's specific instructions for clearing stored memory, as this usually involves holding a button for several seconds.
Maintenance
Cleaning
- Wipe the device and cuff gently with a soft, dry cloth.
- If necessary, use a cloth lightly dampened with water or a mild detergent, then wipe dry immediately.
- Do not use abrasive cleaners, solvents, or immerse the device in water.
Storage
- Store the device in its protective case when not in use.
- Keep it in a cool, dry place, away from direct sunlight, extreme temperatures, and humidity.
- Remove batteries if the device will not be used for an extended period to prevent leakage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Batteries are dead or incorrectly inserted. | Replace batteries with new ones, ensuring correct polarity. |
| Error message on display. | Cuff not applied correctly, movement during measurement, or device malfunction. | Reapply cuff, remain still, or restart the device. If error persists, contact support. |
| Inaccurate or inconsistent readings. | Incorrect cuff placement, improper body position, or recent activity. | Ensure correct cuff placement and body position. Rest for 5 minutes before re-measuring. Avoid factors like caffeine/exercise before measurement. |
| Cuff does not inflate or inflates too little/much. | Air leakage, cuff not connected properly, or pump issue. | Check cuff connection. If problem persists, contact customer support. |
Specifications
| Model Number | NIS-WS1011 |
| Power Source | 2 AAA Batteries |
| Wrist Cuff Circumference | 12.5 cm to 21.5 cm |
| Memory Capacity | 60 measurements for 2 users (120 total) |
| Product Dimensions (Package) | 12 x 11.8 x 10.4 cm |
| Item Weight | 320 Grams |
| Manufacturer | Nissei |
| Origin | Italy |
| Validations | ESH / IP / BHS / AFSSAPS (ANSM) |
Warranty and Support
This NISSEI product comes with a manufacturer's warranty of 2 years from the date of purchase.
For technical support, warranty claims, or service inquiries, please contact your retailer or the official NISSEI customer service in your region. Please retain your proof of purchase for warranty validation.







