I. Safety Warnings
- Do not immerse the product in water or any other liquid, as this product is not waterproof.
- If any liquid accidentally enters the product, immediately disconnect it and remove it from use.
- To avoid electric shock, ensure your hands are dry before installing or uninstalling the product.
II. Product Overview
The Lenovo AC101 Open-Ear Earphones are wireless Bluetooth 6.0 headphones designed for sports and everyday use. Featuring an open-ear design, they provide comfort and allow awareness of surroundings. Key features include high-fidelity audio, noise cancellation for calls, and an ergonomic fit.
The earphones come with a charging case and offer long battery life, making them suitable for various activities from video games to outdoor sports.

High-quality open-back headphones with advanced features.

The Lenovo 'Energy Cube' design integrates multiple advanced audio technologies.
III. Package Contents
Ensure all items are present in the package:
- 2 x Bluetooth Earphones (Left and Right)
- 1 x Charging Case
- 1 x Type-C Charging Cable
- 1 x User Manual (this document)
IV. Specifications
| Feature | Specification |
|---|---|
| Brand Name | Lenovo |
| Model | AC101 (also referred to as LE503 in some documentation) |
| Style | OWS ear hook headphones, Open-ear design |
| Material | ABS |
| Bluetooth Version | 6.0 (Wireless version) |
| Communication | True wireless |
| Wireless Range | 10m-20m (Maximum) |
| Vocalism Principle | Dynamic |
| Driver Diameter | 12mm |
| Frequency Response Range | 20 - 20000Hz |
| Impedance Range | up to 32 Ω |
| Codecs | AAC, SBC |
| Sound Isolating | Yes |
| Active Noise-Cancellation | No (Features ENC intelligent noise reduction for calls) |
| With Microphone | Yes |
| Waterproof | Yes (Life waterproofing) |
| Earbud Battery Capacity | 35mAh |
| Charging Case Battery Capacity | 300mAh |
| Charging Method | Charging case, Type-C |
| Charging Time | 1.5 hours |
| Single Play Time | About 4 hours |
| Total Play Time (with case) | About 30 hours |
| Control Button | No (Touch control) |
| Volume Control | Yes |
| Certification | CE, FCC, RoHS |
*Note: The above data are from the (Lenovo China) laboratory; there may be differences or errors due to changes in the use environment. Please refer to actual use.

Detailed product performance parameters.

The 14.2mm large diaphragm ensures high-fidelity sound.

New Wireless 6.0 chip for faster and more stable connection.
V. Setup & Pairing
Power On/Off
- Power On: Open the charging case lid. The earphones will power on automatically.
- Power Off: Place the earphones back into the charging case and close the lid. The earphones will power off.
Initial Pairing
- Ensure the earphones are charged.
- Open the charging case lid to power on the earphones. They will enter pairing mode automatically.
- On your device (smartphone, tablet, etc.), go to Bluetooth settings.
- Search for "Lenovo AC101" or "LE503" in the list of available devices.
- Select the earphones to connect. You will hear a confirmation tone once connected.
Video: Initial Setup and Pairing Demonstration
This video demonstrates how to power on, wear, and pair the Lenovo AC101 earphones with a mobile device, highlighting the comfortable fit and sound quality.
VI. Operating Instructions
Wearing the Earphones
The AC101 earphones feature an ergonomic open-ear hook design for comfortable and secure wear, especially during sports or outdoor activities. The design ensures stability without pressing on the ear.

The ergonomic design with a three-point support structure ensures stable wearing and 360° twist without deformation.
Touch Controls
The earphones feature sensitive touch controls for easy operation:

- Tap:
- Volume + (Right earbud)
- Volume - (Left earbud)
- Tap twice:
- Pause/play music (Right earbud)
- Answer/end call (Left earbud)
- Knock three times:
- Previous song (Left earbud)
- Next song (Right earbud)
- Press and hold for two seconds:
- Wake up voice assistant (Right earbud)
- Reject call (Left earbud)
Mode Switching (Right Earbud Operation)
- Game Mode: Press and hold the right earbud button for 1-3 seconds to enter Game Mode.
- Music Mode: Press and hold the right earbud button for 1-3 seconds to enter Music Mode.
Charging
To charge the earphones, place them back into the charging case. Connect the Type-C charging cable to the charging case and a power source.

The charging case provides additional battery life, extending total usage to about 30 hours. Earphone charging time is approximately 1.5 hours.
VII. Maintenance
To ensure the longevity and optimal performance of your Lenovo AC101 earphones, please observe the following precautions:
- Do not use the earphones in high-temperature or humid environments.
- Do not disassemble the earphones arbitrarily, as this may impair performance.
- Turn off the power after use (by placing them in the charging case and closing the lid) to extend battery life.
- Clean the earphones and charging contacts regularly with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
VIII. Troubleshooting (FAQ)
- 1. Cannot Connect:
- Restart the device or reset Bluetooth settings on your source device.
- 2. Intermittent Audio:
- Check the battery level of the earphones and charging case. Move away from sources of signal interference (e.g., Wi-Fi routers, other Bluetooth devices).
- 3. No Sound from Earphones:
- Verify correct pairing with your device. Ensure the audio output is enabled and the volume is turned up on both your device and the earphones.
IX. User Tips
- For optimal sound quality and call clarity, ensure the earphones are properly seated on your ears.
- Regularly clean the charging contacts on both the earphones and the case to prevent charging issues.
- If experiencing connection issues, try forgetting the device in your phone's Bluetooth settings and re-pairing.
- Keep the charging case charged to ensure your earphones are always ready for use.
X. Warranty & Support
For detailed warranty information, technical support, or further assistance, please refer to the official Lenovo support channels or the comprehensive user manual available in PDF format.
You can access the user manual PDF here.





