1. Introduction
This manual provides detailed instructions for the Lenovo X3 Pro, X4, and X7 series of Bone Conduction Headphones. These headphones are designed for sports and active lifestyles, offering an open-ear listening experience with advanced Bluetooth connectivity and durable, waterproof designs.
Model Overview:
- Lenovo X3 Pro: Features IP56 waterproof rating, built-in Bluetooth 5.3, and true bone conduction technology.
- Lenovo X4: Features IP56 waterproof rating, built-in Bluetooth 5.3, and true bone conduction technology. Not suitable for swimming.
- Lenovo X5: Features IPX8 waterproof rating, built-in Bluetooth 5.3, and 8GB internal storage for MP3 playback. Suitable for swimming.
- Lenovo X7: Features new Air Conduction technology, built-in Bluetooth 5.3, and an IPX5 waterproof rating.
2. Package Contents
Please check the box for the following items:
- Earphone x 1
- Charging cable x 1
- User Manual x 1
3. Specifications
| Feature | Specification | Notes |
|---|---|---|
| Brand | Lenovo | |
| Material | ABS | |
| Bluetooth Version | 5.3 | |
| Wireless Range | <10m (X4), ≥10m (X7) | |
| Frequency Response | 20 - 20000Hz | |
| Impedance Range | up to 32 Ω | |
| Max Output | 10mW | |
| Total Harmonic Distortion | 1% | |
| Charging Method | Cable (Type-C) | |
| With Microphone | Yes | |
| Active Noise-Cancellation | Yes | |
| Control Button | Yes | |
| Volume Control | Yes | |
| Support APP | Yes | |
| Certification | CE, RoHS | |
| Origin | Mainland China | |
| Bluetooth Protocol (X4) | A2DP/AVRCP/HSP/HFP | |
| Receiver Sensitivity (X7) | -80dB ±3dB | |
| Rated Power (X7) | 0.75W |
Model-Specific Specifications:
| Feature | X3 Pro | X4 | X7 |
|---|---|---|---|
| Vocalism Principle | Bone Conduction | Bone Conduction | Air Conduction |
| Waterproof Rating | IP56 | IP56 | IPX5 |
| Battery Capacity | 135mAh | 150mAh | 150mAh |
| Battery Life (Play Time) | ~7 hours | ~7 hours | ~10 hours |
| Charging Time | ~2 hours | ~2 hours | ~2 hours |
| Weight | 25g | 28g | Lightweight |
| Speaker Unit Size | 16mm | 16mm | |
| Swimming Capability | No | No | No (X5 model is suitable for swimming) |
4. Product Diagram (Lenovo X4 Example)
The following diagram illustrates the key components of the Lenovo X4 headphone. Other models may have slight variations.
5. Setup
5.1 Power On/Off
- To Power On: Long press the Plus (+) button for approximately 3 seconds. The red and blue indicator lights will flash.
- To Power Off: Long press the Plus (+) button for approximately 3 seconds. The indicator lights will turn off.
5.2 Bluetooth Connection
- Activate Pairing Mode: Ensure the headset is powered on. It will automatically enter pairing mode, indicated by flashing red and blue lights.
- Enable Bluetooth on Your Device: On your smartphone, tablet, or other smart device, go to the Bluetooth settings and turn on Bluetooth.
- Search for Device: Your device will scan for available Bluetooth devices. Look for a device named "Lenovo thinkplus-X4" or similar (e.g., "Lenovo X3 Pro", "Lenovo X7").
- Connect: Select the headphone from the list. Once connected, the indicator light will flash slowly in light blue, and then turn off when music is playing.
6. Operating Instructions
6.1 Indicator Light Description
- Red and Blue Flashing: Pairing mode / Powering on.
- Light Blue Slow Flash: Successfully connected to a device.
- Blue Light Off: Device is connected and playing audio.
- Red Light (when connected): Indicates low battery, charging is needed.
6.2 Button Functions
| Action | Button Press |
|---|---|
| Power On/Off | Long press '+' key for 3 seconds |
| Answer/Hang Up Call | Single click any key |
| Reject Call | Long press any key |
| Play/Pause Music | Single click any key |
| Next Song | Double click '+' key |
| Previous Song | Double click '-' key |
| Volume Up | Single click '+' key |
| Volume Down | Single click '-' key |
| Activate Voice Assistant | Triple click any key |
6.3 Charging
When the headphone's power indicator shows red, it indicates that charging is required. Connect the provided USB charging cable to the TYPE-C charging port on the headphone and plug the other end into a 5V charger.
7. Maintenance
To ensure the longevity and optimal performance of your Lenovo Bone Conduction Headphones, please follow these maintenance guidelines:
- Water Protection: Always ensure the TYPE-C silicone plug is securely closed during use to prevent water, sweat, or dust from entering the charging port.
- Drying Before Charging: If the headphones have been exposed to moisture, dry them completely before opening the silicone plug and connecting the charging cable.
- Storage: Store the headphones in a clean, dry environment. Avoid placing them in areas with strong electromagnetic forces, as this may cause malfunctions.
- Cleaning: Use a soft, dry cloth to clean the headphones. Do not use harsh chemicals or abrasive materials.
- Handling: Avoid subjecting the headphones to excessive force, bending beyond their natural flexibility, or exposure to sharp objects.
- Disassembly: Do not attempt to disassemble or repair the headphones yourself. Unauthorized disassembly will void the warranty.
8. Troubleshooting
If you encounter issues with your headphones, try the following steps:
- No Power: Ensure the headphones are fully charged. Connect them to a power source and check the indicator light.
- Cannot Pair: Make sure the headphones are in pairing mode (red and blue lights flashing). Turn off and on Bluetooth on your device, then try searching again. Ensure the headphones are not already connected to another device.
- No Sound: Check the volume levels on both the headphones and your connected device. Ensure the headphones are properly connected via Bluetooth.
- Intermittent Connection: Move closer to your connected device to ensure you are within the Bluetooth range (<10m). Avoid environments with strong Wi-Fi or other wireless interference.
- Charging Issues: Ensure the charging cable is securely connected to both the headphones and the power adapter. Try a different charging cable or power adapter if available.
If problems persist, please contact customer support.
9. User Tips
- Swimming Use: Only the Lenovo X5 model is designed for swimming with an IPX8 waterproof rating and built-in storage. The X3 Pro, X4, and X7 models are not suitable for swimming, despite their water resistance ratings.
- Comfort: The flexible design of these headphones (e.g., titanium alloy frame in X4) allows for comfortable wear and adjustment to different head sizes.
- Open-Ear Awareness: Bone conduction and air conduction designs allow you to hear your surroundings while enjoying audio, enhancing safety during outdoor activities.
10. Safety Information
10.1 Hazardous Substances
The following table outlines the name and content of hazardous substances in the product, in accordance with SJ/T 11364 and GB/T 26572 standards.
| Part Name | Pb (Lead) | Hg (Mercury) | Cd (Cadmium) | Cr(VI) (Hexavalent Chromium) | PBB (Polybrominated Biphenyls) | PBDE (Polybrominated Diphenyl Ethers) |
|---|---|---|---|---|---|---|
| Printed circuit assembly | O | O | O | O | O | O |
| Small structural parts (e.g., TYPE-C charging port) | O | O | O | O | O | O |
Key:
O: Indicates that the content of the hazardous substance in all homogeneous materials of the part is below the limit requirements specified in GB/T 26572.
X: Indicates that the content of the hazardous substance in at least one homogeneous material of the part exceeds the limit requirements specified in GB/T 26572. (No 'X' marks in this product.)
10.2 General Warnings
WARNING: Please mind potential fire risk and strictly follow the instruction manual for charging and storage. For disposal, please check your local authority's website for more information and dispose of the lithium-ion battery safely in accordance with the applicable legal requirements.
11. Warranty and Support
11.1 Disclaimer
This user manual does not provide any form of guarantee, position expression, or other implication. The mentioned products, specifications, and information are for reference only, and the content may be updated on the webpage at any time without additional notification.
11.2 Warranty Statement
The product attached to this document is guaranteed as follows: If the product has quality defects or is damaged under normal conditions of use within twelve (12) months from the purchase date ("Warranty Period"), it can be repaired free of charge. If the manufacturer confirms that it cannot be repaired, a free replacement will be provided. Repaired or replaced products will continue to enjoy the warranty during the remaining warranty period (the shortest not less than 30 days). The purchase date on the sales ticket shall prevail; if the purchase date cannot be determined, the warranty period shall be calculated as 13 months from the manufacturing date.
To apply for a warranty, please call the product service hotline first and follow the instructions provided. When applying for warranty, you need to provide an accurate, complete, and clearly filled out valid sales invoice.
11.3 Warranty Exclusions
The above guarantee does not apply to the following situations:
- The validity period of the warranty has been exceeded.
- Alteration of the warranty card and product code, or if they do not match the product body.
- Causes due to misuse, abuse, improper transportation, maintenance, or storage.
- Failure or damage caused by force majeure (such as earthquake, war, fire, etc.) or accident.
- Damage caused by sharp objects.
- Products with signs of burning or flooding.
- Damage caused by unauthorized disassembly.
- Aging, discoloration, abrasion, rupture, and other losses that occur during normal use of the product.
- If the original identification label of the product is changed or damaged, this guarantee will become invalid.
The completeness and appearance of the product and accompanying materials are not within the scope of the guarantee. You should check for any objections to discrepancies upon receipt.
11.4 Contact Information
- After-sales service Email: frank@szeysan.cn
- Service supervision hotline: 400-812-0102
"Lenovo" "thinkplus" and other Lenovo logos are trademarks of Lenovo Group or its affiliated company. Other mentioned trademarks, company names, products, or services may be trademarks of a Lenovo Group company or another company.
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