Introduction
The Lenovo LP25 AI Translation Earphones are advanced wireless earbuds designed for high-fidelity audio and real-time language translation. Featuring Bluetooth 5.4, a comfortable ear-clip design, and intelligent translation capabilities, these earphones are ideal for communication across language barriers, daily listening, and gaming. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your LP25 earphones.

Figure 1: Lenovo LP25 AI Translation Earphones
Product Showcase
Video 1: Lenovo LP25 Earphones Product Showcase. This video demonstrates the various color options and highlights key features of the earphones.
Package Contents
Please check the box for the following items:
- 2 x Lenovo LP25 Bluetooth Earphones
- 1 x Charging Case
- 1 x USB Type-C Charging Cable
- 1 x User Manual
Specifications

Figure 2: Headphone Parameters
| Feature | Detail |
|---|---|
| Brand | Lenovo |
| Model | LP25 |
| Bluetooth Version | 5.4 |
| Charging Interface | Type-C |
| Earphone Charging Time | Approximately 2 hours |
| Single Playback Time | Approximately 6 hours |
| Earphone Battery Capacity | 35mAh |
| Charging Case Battery Capacity | 250mAh |
| Comprehensive Battery Life | Approximately 16 hours (with charging case) |
| Wireless Transmission Distance | 10 meters |
| Speaker Unit | Φ12mm |
| Material | Plastic, Silica Gel |
| Max Output | 10mW |
| Frequency Response Range | 20 - 20000Hz |
| Waterproof | Yes |
| Active Noise-Cancellation | Yes |
| With Microphone | Yes |
| Control Button | Yes |
| Volume Control | Yes |
| Communication | True Wireless |
| Style | Ear Clip Headphones |
| Sound Isolating | Yes |
| Maximum Wireless Range | 10m-20m |
| Number Of Drivers | 2 |
| Vocalism Principle | Dynamic |
| Certification | CE |
| Origin | Mainland China |
| Supported Translation Languages | 135 Languages (for offline/text translation) |
| Online Translation Languages | 21 Languages (for audio/video calls) |
| Compatibility | Android, iOS, Windows |
Setup Guide
1. Charging the Earphones and Case
Before first use, fully charge the earphones and charging case. Connect the provided USB Type-C cable to the charging port on the case and a power source. The indicator light on the case will show charging status.
2. App Download and Installation
To utilize the full translation features, download the Nebulabuds APP.
- Scan the QR code provided in the packaging or on the product page to download the Nebulabuds APP.
- Install the application on your smartphone (compatible with Android and iOS).

Figure 3: Nebulabuds APP Download and Device Activation
3. Bluetooth Pairing
- Open the charging case. The earphones will automatically enter pairing mode.
- On your smartphone, go to Bluetooth settings and search for available devices.
- Select "Lenovo LP25" from the list to connect.
4. Device Activation (for Translation Features)
After pairing via Bluetooth:
- Open the Nebulabuds APP.
- Navigate to the app settings and locate the "Bind New Device" option.
- Enter the activation code provided with your earphones or scan the activation QR code (refer to Figure 3).
- Confirm activation to enjoy all translation benefits.
Operating Instructions
Touch Controls
The Lenovo LP25 earphones feature agile touch-sensitive controls on each earbud. The control area is typically the outer surface of the earbud.

Figure 4: Earbud Touch Controls
- Answer/Hang up Call: Double-click the touch key on either the host or secondary unit.
- Refuse Call: Long press the touch button on either the host or secondary unit for 2 seconds.
- Music Playback/Pause: Double-click the touch key on either the host or secondary unit.
- Previous Song: Three-touch button on the Left earphone.
- Next Song: Three-touch button on the Right earphone.
- Volume +: Click the touch button on the Right earphone.
- Volume -: Click the touch button on the Left earphone.
- Dual Mode Switching (Game/Music): Long press the Right earphone for 2 seconds.
- Voice Control Function: Long press the Left earphone touch button for 2 seconds.
Translation Functions (via Nebulabuds APP)
The Nebulabuds APP unlocks the full potential of your LP25 earphones' AI translation capabilities. All translation functions are free to use.

Figure 5: Translation APP Functions Interface
- Face-to-Face Translation (Binaural Mode): Each person wears one earphone. The phone is placed between them, translating both parties' languages and broadcasting through the earphones.
- Simultaneous Interpretation: Translate others' speech into your language and play it through your headphones. Ideal for forums, classrooms, or lectures.
- Headphones + Phone Mode (Face-to-Face): You wear the headphones, and the phone is placed between you and the other person. The app translates and broadcasts the speeches via voice through the phone's speaker.
- Distinguish Between Speakers: The app automatically tags the speaker of each sentence, useful for recording meeting content.
- On-Site Recording: Wear your headphones and use the app to transcribe real-time conversations into text, facilitating meeting minutes.
- Summary and Replay: The app saves original audio and transcribed files, allowing you to replay or share them at any time.
- Audio and Video Calls: Provides real-time translation for online calls. The other party does not need to download the application. To use, select "Audio Video Call" mode on the homepage and grant microphone and camera permissions.
- AI Voice Intelligent Dialogue: Engage in real-time voice conversations with the AI, asking questions and receiving answers.
The earphones support translation between 135 languages for general use and 21 languages for online audio/video chat translation.

Figure 6: Supported Translation Languages
Maintenance and Care
- Cleaning: Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth. Do not use harsh chemicals or abrasive materials.
- Storage: When not in use, store the earphones in their charging case to protect them from dust and damage.
- Avoid Moisture: Although waterproof, avoid prolonged exposure to water or extreme humidity. Ensure earphones are dry before placing them back in the charging case.
- Charging: Use only the provided charging cable or a certified Type-C cable. Avoid overcharging.
- Temperature: Do not expose the earphones to extreme temperatures (hot or cold) as this can affect battery life and performance.
Troubleshooting
- Q: The earphones are not pairing with my device.
- A: Ensure the earphones are charged and in pairing mode (open the charging case). Turn off and on your device's Bluetooth. Try forgetting the device in your Bluetooth settings and re-pairing.
- Q: I cannot find the activation code for the translation app.
- A: The activation code is typically found on a card within the product packaging or displayed within the Nebulabuds APP during the initial setup process. Refer to Figure 3 for activation steps.
- Q: The translation function is not working.
- A: Ensure the earphones are properly connected to your phone via Bluetooth and the Nebulabuds APP. Verify that the device has been activated within the app. Check your internet connection, as some translation features may require it. Make sure microphone permissions are granted to the app.
- Q: Sound quality is poor or there is sound leakage.
- A: Ensure the earphones are correctly positioned in your ears for optimal sound transmission and to minimize sound leakage. The ear-clip design is intended for comfort and directional sound. Check for any debris blocking the speaker grilles.
- Q: The battery life seems shorter than expected.
- A: Battery life can vary based on volume levels, usage patterns (e.g., continuous translation vs. music playback), and environmental factors. Ensure the earphones and case are fully charged. Using the latest Bluetooth 5.4 chip, the LP25 is optimized for power efficiency.
User Tips
- Free Translation: All translation functions within the Nebulabuds APP are free to use, offering extensive language support without additional costs.
- Online Translation: For audio and video calls with translation, the other party does not need to download the Nebulabuds app, simplifying cross-language communication.
- Comfortable Fit: The ear-clip design is lightweight and ergonomic. Experiment with positioning to find the most comfortable and secure fit for extended wear.
Warranty and Support
Lenovo products are manufactured to high quality standards. This product is covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included in your package for specific terms and conditions, including the warranty period and how to make a claim.
For technical support, service, or further inquiries, please contact your retailer or visit the official Lenovo support website. Keep your proof of purchase for warranty services.





