1. Introduction
Thank you for choosing the Tanita HD-366 Digital Weight Scale. This manual provides essential information for the safe and effective use of your new scale. The HD-366 is designed to provide accurate weight measurements with its advanced Japan technology, featuring a durable 8mm tempered glass platform, a large blue backlit LCD display, and convenient step-on activation. Please read this manual thoroughly before use and retain it for future reference.
2. Safety Information
To ensure safe operation and prevent damage, please observe the following precautions:
- Place the scale on a hard, flat, and stable surface. Carpets or uneven floors may affect accuracy.
- Do not use the scale on a wet or slippery surface. Ensure the scale surface is dry before stepping on it.
- Do not jump on the scale. Step on and off gently.
- The scale is designed for personal weight measurement. Do not use it for commercial or medical diagnostic purposes.
- Do not immerse the scale in water or use abrasive cleaners. Clean with a damp cloth and mild detergent.
- Keep the scale away from strong electromagnetic fields.
- Do not attempt to disassemble or repair the scale. This will void the warranty.
- Keep batteries out of reach of children. Dispose of used batteries properly according to local regulations.
- The maximum weight capacity is 440 lbs (200 kg). Do not exceed this limit.
3. Package Contents
Please check that all items are present in the package:
- Tanita HD-366 Digital Weight Scale
- AAA Batteries (quantity may vary, typically 3 or 4)
- Instruction Manual (this document)
4. Product Features
The Tanita HD-366 Digital Weight Scale offers a range of features for a superior weighing experience:
- Accurate and Reliable: Utilizes advanced Japan technology for precise and consistent weight measurements.
- Heavy-Duty Construction: Features an 8mm thick tempered glass platform, designed for durability and supporting up to 440 pounds (200 kg).
- Easy Step-On Operation: Activates automatically when you step on the scale, eliminating the need for buttons or tapping.
- Large, Easy-To-Read Display: Equipped with an oversized reverse blue backlit LCD display, ensuring clear visibility even in dimly lit environments.
- Stylish Design: A sleek, low-profile aesthetic that complements various bathroom decors.
- Auto Shut-Off: Conserves battery life by automatically turning off after a period of inactivity.

Image: Front view of the Tanita HD-366 Digital Weight Scale, black with a blue digital display showing "123.6 lb".

Image: The Tanita HD-366 scale with text highlighting its 440 lbs / 200 kgs weight capacity.

Image: Close-up of the extra-large blue backlit LCD display of the Tanita HD-366, showing "123.6 lb" and emphasizing readability in dark rooms.
5. Setup
5.1 Battery Installation
- Locate the battery compartment on the underside of the scale.
- Open the battery compartment cover.
- Insert the AAA batteries, ensuring the correct polarity (+ and -) as indicated inside the compartment.
- Close the battery compartment cover securely.
5.2 Initial Placement
Place the scale on a hard, flat, and stable surface. Avoid placing it on carpets, rugs, or uneven flooring, as this can affect measurement accuracy.
6. Operating Instructions
6.1 Taking a Measurement
- Ensure the scale is on a flat, stable surface.
- Gently step onto the center of the scale platform. The scale will automatically turn on and display your weight.
- Stand still with your weight evenly distributed until the display stabilizes and shows your final weight.
- Step off the scale. The display will remain lit for a few seconds before automatically turning off to conserve battery life.

Image: A person's feet stepping onto the Tanita HD-366 scale, illustrating the easy step-on operation.
6.2 Weight Unit Selection (if applicable)
Some models allow switching between pounds (lb) and kilograms (kg). If your scale has this feature, look for a small button on the underside of the scale, usually near the battery compartment. Press this button to toggle between units.
7. Maintenance and Care
- Cleaning: Wipe the scale surface with a soft, damp cloth and a mild detergent. Do not use abrasive cleaners, solvents, or immerse the scale in water.
- Storage: Store the scale in a cool, dry place. Avoid extreme temperatures and direct sunlight.
- Battery Replacement: Replace batteries when the display becomes dim or shows a low battery indicator. Always replace all batteries at the same time with new ones of the same type.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display / Scale does not turn on. |
|
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| Inaccurate or inconsistent readings. |
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| "Err" or other error message on display. |
|
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9. Specifications
- Model: HD-366
- Brand: TANITA
- Weight Capacity: 440 Pounds (200 kg)
- Display Type: LCD with Reverse Blue Backlight
- Material: 8mm Thick Tempered Glass
- Color: Black
- Special Feature: Auto Shut Off, Step-On Operation
- Power Source: AAA Batteries (quantity not specified, typically 3 or 4)
- Package Dimensions: Approximately 17.32 x 16.77 x 1.81 inches
- Item Weight: Approximately 7.85 Pounds
10. Warranty and Support
The Tanita HD-366 Digital Weight Scale comes with a 3-year assurance, reflecting Tanita's commitment to quality and reliability.
For technical support, warranty claims, or further assistance, please contact Tanita customer service. Refer to the official Tanita website or your purchase documentation for the most current contact information.
Legal Disclaimer: Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition. This product is not intended for medical diagnosis.





