1. Introduction
Thank you for choosing the Uogic Pen for Microsoft Surface. This active stylus is designed to provide a natural and precise writing and drawing experience on compatible Microsoft Surface devices. Featuring 1024 levels of pressure sensitivity, palm rejection technology, and a long-lasting battery, it is an ideal tool for note-taking, sketching, and navigating your device with enhanced control.

Figure 1: Uogic Pen for Microsoft Surface
2. Product Overview & What's in the Box
Your Uogic Pen package includes everything you need to get started:
- 1 x Uogic Stylus Pen (with pre-installed HB tip)
- 2 x Replacement Pen Tips (H & 2H)
- 1 x User Manual
- 1 x AAAA Battery (included)
3. Setup
3.1 Battery Installation
The Uogic Pen uses a single AAAA battery for power. To install or replace the battery:
- Gently twist the top part of the pen counter-clockwise to open the battery compartment.
- Insert the AAAA battery with the positive (+) end facing towards the pen tip.
- Twist the top part clockwise to securely close the compartment.
3.2 Replacing Pen Tips
Your Uogic Pen comes with two additional pen tips (H and 2H) to suit different writing and drawing preferences. To replace a tip:
- Gently pull the existing pen tip straight out from the stylus.
- Align the new tip with the pen's opening and push it firmly until it clicks into place.

Figure 2: Replacing Pen Tips
3.3 Initial Pairing (Bluetooth)
The Uogic Pen connects automatically to compatible Surface devices. No Bluetooth pairing is typically required for basic functionality. However, for advanced features or if the pen is not responding, ensure your device's Bluetooth is enabled. The pen operates using MPP 1.5 or MPP 2.0 protocols.
Video 1: Demonstrates unboxing, battery installation, tip replacement, and basic usage of the Uogic Pen.
4. Operating Instructions
4.1 Pressure Sensitivity
The Uogic Pen supports 1024 levels of pressure sensitivity, allowing for varying line thickness and opacity based on how hard you press the pen against the screen. This provides a natural and intuitive drawing and writing experience.

Figure 3: 1024-Level Pressure Sensitivity in action
4.2 Palm Rejection
With advanced palm rejection technology, you can comfortably rest your hand on the screen while writing or drawing without causing unintended marks or interference. This ensures a smooth and uninterrupted creative flow.

Figure 4: Palm Rejection feature
4.3 Button Functions
The Uogic Pen features two intuitive buttons on its side:
- Eraser Button: Press and hold this button to activate the eraser function in compatible applications.
- Right-click Button: Press and hold this button to perform a right-click action, similar to a mouse.

Figure 5: Eraser and Right-click Button Functions
5. Compatibility
The Uogic Pen is widely compatible with Microsoft Surface devices and other touchscreens running Windows 10 or 11 that support MPP 1.5 or MPP 2.0 protocols. Compatible models include:
- Surface Pro (3rd/4th/5th/6th/7th/7+/8th/9th/10th/X gen)
- Surface Duo (1st/2nd gen)
- Surface Go (1st/2nd/3rd gen)
- Surface Book (1st/2nd/3rd gen)
- Surface Studio (1st/2nd/2+ gen)
- Surface Laptop (1st/2nd/3rd/4th/5th gen)

Figure 6: Broad Compatibility with Microsoft Surface Devices
6. Maintenance
6.1 Battery Life
The Uogic Pen is designed for low power consumption, offering an impressive 1500-hour runtime on a single AAAA battery. This ensures extended usage for work or study without frequent battery changes.

Figure 7: Super Long Battery Life
6.2 General Care
To ensure the longevity of your Uogic Pen, keep it clean and free from dust and debris. Store it in a safe place to prevent accidental damage to the pen tip or body.
7. Troubleshooting
7.1 Pen Not Responding
- Ensure the AAAA battery is correctly installed and has sufficient charge. Replace if necessary.
- Check your device's Bluetooth settings to ensure it is enabled and the pen is recognized.
- Restart your Surface device.
- Verify that your device supports MPP 1.5 or MPP 2.0 protocols.
7.2 Lag or Inaccurate Tracking
- Ensure there are no physical obstructions on the screen or pen tip.
- Check for any software updates for your Surface device.
- If experiencing persistent lag, some applications may allow for gain value adjustments to smooth strokes.

Figure 8: Addressing potential disconnection or lag issues
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | F94S |
| Product Dimensions | 5.71 x 0.38 x 0.38 inches |
| Item Weight | 0.705 ounces (20 Grams) |
| Battery Type | 1 x AAAA Lithium Ion (included) |
| Battery Average Life (Standby) | 1500 Hours |
| Pressure Sensitivity | 1024 Levels |
| Material | Aluminum |
| Color | Black |
| Manufacturer | Uogic |
| Country of Origin | China |
9. Warranty & Support
The Uogic Pen comes with a 12-month warranty. If you encounter any issues or have questions regarding your product, please do not hesitate to contact Uogic customer service. They are available to assist you 24 hours a day.
For support, please refer to the contact information provided on the product packaging or the official Uogic website.



