1. Introduction
The Lenovo X4 Bone Conduction Bluetooth Headphones offer a unique open-ear audio experience, ideal for sports and outdoor activities. Featuring Bluetooth 5.3, IP56 waterproof rating, and a lightweight, flexible design, they provide clear sound and situational awareness without compromising comfort. These headphones transmit sound through your cheekbones, allowing you to stay aware of your surroundings while enjoying high-quality audio.
2. Package Contents
Please check the box for the following items:
- 1 x Lenovo X4 Bone Conduction Earphones
- 1 x USB Type-C Charging Cable
- 1 x User Manual
- Earphone Cups
3. Specifications
| Feature | Detail |
|---|---|
| Model Number | Lenovo X4 |
| Bluetooth Version | 5.3 |
| Material | ABS, Silica Gel |
| Weight | 28g |
| Battery Capacity | 150 mA |
| Battery Life (Playback) | Up to 7 hours |
| Charging Time | Approximately 2 hours |
| Charging Input | 5V = 110mA |
| Maximum Wireless Range | <10m |
| Bluetooth Protocols | A2DP/AVRCP/HSP/HFP |
| Waterproof Rating | IP56 (Sweat-proof, rain-proof, splash-proof) |
| Driver Diameter | 16.2mm |
| Magnet Type | Neodymium |
| Frequency Response Range | 20 - 20000Hz |
| Resistance | 32Ω |
| Total Harmonic Distortion | 0.08% |
| Microphone | Built-in, Sensitive, ENC noise reduction |
| Active Noise-Cancellation | Yes |
| Control Method | Button control |
| Wearing Style | Ear Hook |
| Supported Audio Formats | SBC, MP3, WAV |
| Certification | CE, RoHS |
4. Setup Guide
4.1 Charging the Headphones
Before first use, fully charge your Lenovo X4 headphones. Connect the provided USB Type-C charging cable to the charging port on the headphones and to a compatible USB power source. A full charge takes approximately 2 hours.
4.2 Powering On/Off
- Power On: Long press the multi-function button for 3 seconds.
- Power Off: Long press the multi-function button for 3 seconds.
4.3 Bluetooth Pairing
- Ensure the headphones are powered off.
- Long press the multi-function button for 3 seconds to power on and enter pairing mode (indicator light may flash).
- On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "Lenovo X4" from the list of found devices to connect.
- Once successfully paired, the headphones will automatically connect to your device on subsequent uses.
5. Operating Instructions
The Lenovo X4 headphones feature intuitive button controls for various functions:
- Power On/Off: Long press the multi-function key for 3 seconds.
- Play/Pause: Click the function key.
- Previous Track: Double-click the function key.
- Next Track: Double-click the function key.
- Answer/Hang Up Call: Click the function key.
- Reject Incoming Call: Long press the multi-function key for 2 seconds.
- Activate Voice Assistant (Siri/Google Assistant): Long press the left earphone button for 2 seconds.
6. Maintenance and Care
6.1 Waterproof Information
The Lenovo X4 headphones are rated IP56, meaning they are sweat-proof, rain-proof, and splash-proof. This protection allows you to enjoy sports and outdoor activities without worry about light moisture. However, they are not designed for submersion in water. Do not swim or shower with these headphones.
6.2 Cleaning
To clean your headphones, gently wipe them with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these may damage the device. Ensure the charging port is dry before charging.
6.3 Storage
Store the headphones in a cool, dry place away from extreme temperatures and direct sunlight. The flexible titanium alloy frame allows for bending and twisting, but avoid excessive force or sharp bends to prevent damage.
7. Troubleshooting
- No Power: Ensure the headphones are fully charged. Connect to a power source and check the charging indicator.
- Cannot Pair: Make sure Bluetooth is enabled on your device and the headphones are in pairing mode. Try turning off and on both the headphones and your device.
- No Sound: Check the volume levels on both the headphones and your connected device. Ensure the headphones are properly paired.
- Sound Leakage: While bone conduction headphones are designed to allow ambient sound, excessive sound leakage can occur at maximum volume. For optimal privacy and ear health, avoid using the headphones at maximum volume for extended periods.
- Uncomfortable Fit: The headphones are designed for comfort with an ergonomic ear-hook. If discomfort occurs, adjust the position on your ears.
8. User Tips
- For optimal sound quality and to minimize sound leakage, avoid using the headphones at maximum volume. This also contributes to better ear health.
- The lightweight design (28g) and ergonomic ear-hook ensure comfort even during prolonged exercise.
- The bone conduction technology allows you to hear your surroundings, making them ideal for outdoor sports like cycling or running where situational awareness is crucial.
- Benefit from low latency for gaming and AAC HD audio decoding for an enhanced audio experience.
9. Frequently Asked Questions (FAQ)
- Q: Are they comfortable while wearing?
- A: Yes. The headphones are sized to fit most people's ear size and provide more convenience while maintaining comfort.
- Q: Can I activate Siri voice controls with these headphones?
- A: Yes, you can activate Siri by long pressing the left earphone button for 2 seconds.
- Q: Does it have buttons to go to the next or previous song?
- A: Yes. Double-click the function key for previous or next track.
- Q: How do you answer a call?
- A: You can answer the call by clicking the function key. To reject a call, long press the function key for two seconds. To hang up, click the function key.
- Q: Do they pair automatically with the phone or do I have to connect manually each time?
- A: It will automatically connect with your device after the first-time successful pairing.
- Q: How long does it take to fully charge?
- A: Generally, about 2 hours is enough to get it fully charged.
- Q: Does this have a built-in microphone?
- A: Yes, a built-in sensitive microphone is included for clear conversations, featuring ENC environment call noise reduction.
- Q: It says they're waterproof, can you swim with them?
- A: No. They are sweat-proof, rain-proof, and splash-proof (IP56 rated), but we do not recommend swimming with them.
- Q: Is this sound leak serious?
- A: As long as the volume is not at the maximum, there will be no significant leakage of sound. For ear health, it's advisable to avoid maximum volume for long periods.
- Q: What are the advantages of these open ear headphones and is it worth buying?
- A: The Lenovo X4 offers low latency for gaming, comfortable wear, and AAC HD audio decoding. Its open-ear design allows for situational awareness, making it ideal for sports and outdoor activities.
10. Warranty and Support
Lenovo products are manufactured to the highest quality standards. For information regarding warranty coverage, technical support, or service, please refer to the warranty card included with your product or visit the official Lenovo support website.
