1. Introduction
This manual provides detailed instructions for the proper use and maintenance of your Broonel Silver Rechargeable USI Stylus Pen. This stylus is designed to offer precise input across multiple USI-supported devices, enhancing your digital writing and drawing experience. It is specifically compatible with devices such as the Lenovo ideaPad Duet Chromebook 10.1" CT-X636F.
2. Package Contents
Please verify that all items are present in your package:
- Broonel Silver Rechargeable USI Stylus Pen
- 3 x Additional Pen Tips
- USB Charging Cable (Micro-USB)
3. Setup and Initial Use
3.1 Charging the Stylus
Before first use, fully charge the stylus. The stylus features a Micro-USB charging port.
- Locate the Micro-USB charging port on the stylus.
- Connect the provided USB charging cable to the stylus and to a compatible USB power source (e.g., computer USB port, wall adapter).
- The indicator light will illuminate during charging and turn off when fully charged.
A full charge provides up to 20 days of battery life, depending on usage.
3.2 Compatibility and Pairing
The Broonel USI Stylus Pen is USI (Universal Stylus Initiative) compliant, allowing it to work with a wide range of USI-supported devices. No manual pairing is typically required for USI devices; the stylus should function automatically upon contact with a compatible screen.
This stylus is compatible with devices such as the Lenovo ideaPad Duet Chromebook 10.1" (Model CT-X636F).

4. Operating Instructions
4.1 Basic Operation
The stylus allows for natural and precise interaction with your USI-supported device. Simply touch the pen tip to the screen to begin writing, drawing, or navigating.
4.2 Pressure Sensitivity
The stylus features 4096 levels of pressure sensitivity. This allows for varying line thickness and opacity in supported applications, mimicking the feel of traditional pen and paper. Apply more pressure for thicker, darker lines, and lighter pressure for finer strokes.
4.3 Button Functions
The stylus is equipped with two function buttons on its barrel. The specific functions of these buttons may vary depending on the application and device you are using. Common functions include:
- Top Button: Often used for erasing or right-click functionality.
- Bottom Button: Often used for selecting or lasso tools.
Refer to your device's or application's settings for customization options for these buttons.

5. Maintenance
5.1 Cleaning
To clean the stylus, gently wipe the body with a soft, dry, lint-free cloth. Do not use harsh chemicals, abrasive cleaners, or immerse the stylus in water.
5.2 Replacing Pen Tips
The stylus comes with three additional pen tips. If the original tip becomes worn or damaged, it can be replaced.
- Gently pull the old pen tip straight out from the stylus barrel.
- Insert a new pen tip firmly into the barrel until it is securely seated.

6. Troubleshooting
- Stylus not responding: Ensure the stylus is charged. If the issue persists, try restarting your device.
- Inaccurate input: Check if the pen tip is securely seated. If the tip is worn, replace it with a new one. Ensure your device's screen is clean.
- Buttons not working: Verify that the application you are using supports stylus button functions. Check your device's settings for stylus button customization.
7. Specifications
| Brand | Broonel |
| Color | Silver |
| Material | Silver |
| Compatibility | USI-compliant devices, e.g., Lenovo IdeaPad Duet Chromebook |
| Pressure Sensitivity | 4096 levels |
| Charging Port | Micro-USB |
| Battery Life | Up to 20 days (typical use) |
| Batteries Included | Yes |
8. Warranty and Support
For warranty information or technical support, please refer to the documentation provided with your purchase or contact Broonel customer service directly. Contact details can typically be found on the manufacturer's official website.