1. Introduction
Thank you for choosing the Coibeu Smart Digital Body Scale WKT-C2408. This bioimpedance scale is designed to provide comprehensive body composition analysis, helping you track your health beyond just weight. It measures 8 essential metrics and seamlessly integrates with the Fitdays app, Google Fit, and Apple Health for detailed progress tracking. Please read this manual carefully before use to ensure proper operation and maintenance.
2. Safety Information
- Do not use this device if you are pregnant, have a pacemaker, or other internal medical devices.
- Keep the scale on a hard, flat surface for accurate measurements. Avoid carpets or uneven floors.
- The scale surface can be slippery when wet. Ensure it is dry before stepping on it.
- Do not jump on the scale or use it for purposes other than weighing.
- Keep out of reach of children.
- Do not immerse the scale in water or use abrasive cleaners.
3. Package Contents
- Coibeu Smart Digital Body Scale WKT-C2408
- User Manual
Note: 3 x AAA 1.5V batteries are not included and must be purchased separately.
4. Product Overview
The Coibeu Smart Digital Body Scale features a sleek design with a dual-layer glass platform and 4 high-sensitivity electrodes for precise measurements. The clear LED display shows your weight instantly.

Image: Detailed view of the Coibeu Smart Digital Body Scale, highlighting its LED display, curved edges, and anti-slip pads for safety and stability.
Key Features:
- 8 Essential Body Metrics: Measures Weight, Body Fat, Body Water, Visceral Fat, Bone Mass, Muscle Mass, Body Type, and BMI.
- High Precision: Equipped with 4 high-sensitivity electrodes for accurate readings with a division of 0.05 kg / 0.1 lb.
- Dual-Layer Glass Platform: Strong, durable, and safe with curved edges.
- LED Display: Clear and instant weight readings.
- Smart App Integration: Syncs with the Fitdays app, Google Fit, and Apple Health.
- Multi-User Support: Create multiple profiles for family members, with automatic user recognition.
- Auto On/Off: Automatically turns on when stepped on and off after use to conserve battery.

Image: Visual representation of the 8 essential body measurements (Weight, Body Fat, Body Water, Visceral Fat, Bone Mass, Muscle Mass, Body Type, BMI) tracked by the scale.
5. Setup
5.1 Inserting Batteries
- Open the battery compartment on the underside of the scale.
- Insert 3 x AAA 1.5V batteries, ensuring correct polarity (+/-).
- Close the battery compartment securely.
5.2 Placing the Scale
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.
5.3 Downloading and Pairing the Fitdays App
- Scan the QR code in the manual (if provided) or search for "Fitdays" in the Apple App Store (iOS) or Google Play Store (Android) to download the app.
- Create an account and set up your personal profile (gender, age, height, etc.).
- Ensure Bluetooth is enabled on your smartphone.
- Step onto the scale barefoot. The scale will automatically turn on and display your weight.
- Open the Fitdays app. The app should automatically detect and pair with the scale via Bluetooth, synchronizing your measurements.

Image: The Fitdays app interface demonstrating its compatibility with Google Fit and Apple Health, along with links to download the app from respective app stores.
6. Operating Instructions
6.1 Taking a Measurement
- Place the scale on a hard, flat surface.
- Step onto the scale barefoot, ensuring your feet are centered on the electrodes. The scale will automatically turn on.
- Stand still until your weight is displayed and stabilized on the LED screen.
- If the Fitdays app is open and Bluetooth is enabled on your phone, the full body composition data will sync to the app. If not, only your weight will be displayed on the scale.

Image: A user standing barefoot on the Coibeu Smart Digital Body Scale, illustrating the precise weighing process.
6.2 Using the Fitdays App
The Fitdays app provides a detailed analysis of your body composition and tracks your progress over time.
- Detailed Graphs & History: View your body metrics in intuitive graphs, tracking changes daily, weekly, monthly, or yearly.
- Multi-User Profiles: Create profiles for multiple users within the same account. The app automatically recognizes the user based on their weight and body composition data.
- Goal Setting: Set personal health goals within the app and monitor your progress towards them.
- Data Synchronization: Sync your data with Google Fit and Apple Health for a centralized health overview.

Image: An intuitive graph from the Fitdays app, displaying the transformation curve of body fat percentage, weight, and BMI over a period, helping users visualize their progress.

Image: The Fitdays app demonstrating its family sharing feature, allowing multiple users to have individual profiles and track their data within a single account.
7. Maintenance
7.1 Cleaning
Wipe the scale surface with a soft, damp cloth. Do not use chemical cleaning agents or abrasive materials, as they may damage the glass surface or electrodes.
7.2 Storage
Store the scale in a cool, dry place. Avoid extreme temperatures or direct sunlight. If the scale will not be used for an extended period, remove the batteries to prevent leakage.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Inaccurate readings | Scale on uneven surface or carpet; batteries low; scale not calibrated. | Place scale on a hard, flat floor. Replace batteries. Step on and off the scale quickly to calibrate (zero out) before taking a measurement. |
| No display / Scale won't turn on | Batteries are dead or incorrectly inserted. | Check battery polarity. Replace with new AAA batteries. |
| App not connecting to scale | Bluetooth is off; app not open; scale not active; phone too far. | Ensure Bluetooth is on. Open Fitdays app. Step on scale to activate. Keep phone within range. |
| Body composition data not showing in app | Not standing barefoot; feet not on electrodes; app not paired. | Step on scale barefoot. Ensure feet cover all 4 electrodes. Confirm app is paired and open during measurement. |
| "Lo" or "Err" on display | Low battery ("Lo"); measurement error ("Err"). | Replace batteries for "Lo". For "Err", step off, wait for display to clear, then step on again. |
9. Specifications
| Feature | Specification |
|---|---|
| Model | WKT-C2408 |
| Brand | Coibeu |
| Maximum Capacity | 180 kg (396 lb) |
| Division | 0.05 kg / 0.1 lb |
| Measurements | Weight, Body Fat, Body Water, Visceral Fat, Bone Mass, Muscle Mass, Body Type, BMI |
| Platform Size | 27.8 × 27.8 × 2.3 cm |
| Power Supply | 3 × AAA 1.5 V batteries (not included) |
| App Compatibility | Fitdays (Android/iOS), Google Fit, Apple Health |
| Display Type | LED, Dual-layer glass |
| Electrodes | 4, high sensitivity |
| Connectivity | Bluetooth |
| Country of Origin | China |

Image: A detailed view of the scale's surface, highlighting the 4 electrodes and emphasizing their role in providing more sensitive, precise, and stable measurements.
10. Warranty Information
Coibeu products are manufactured with high-quality standards. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. Please refer to the product packaging or contact customer support for specific warranty terms and duration.
11. Customer Support
If you have any questions, concerns, or require assistance with your Coibeu Smart Digital Body Scale, please contact our customer support team. You can typically find contact information on the product packaging, our official website, or through your retailer.