1. Product Overview
Thank you for choosing the Lenovo TH54 Wireless Bluetooth Headphones. This product is designed to provide a high-quality audio experience and convenient wireless connectivity. It complies with EU CE regulations (Directive 2014/53/EU) and RoHS standards. Please read this manual carefully before use to ensure proper operation and maximum performance.
2. Package Contents
The package includes the following items:
- 1 pair of Lenovo TH54 Bluetooth Headphones
- 1 USB-C charging cable
- 1 User Manual
3. Quick Start Guide
3.1 Power On/Off
- Power On: Take the headphones out of the charging case. They will automatically power on and enter pairing mode.
- Power Off: Place the headphones back into the charging case and close the lid. They will automatically power off and start charging.
3.2 Pairing with Your Device
- Ensure the headphones are in pairing mode (they should automatically enter this mode when powered on for the first time or when removed from the charging case).
- Turn on Bluetooth on your device (e.g., smartphone, tablet, computer).
- Search for "TH54" in the list of available Bluetooth devices.
- Select "TH54" to complete the pairing process. A voice prompt "Connected" will be heard upon successful pairing.
4. Operating Instructions: Touch Control Functions
The Lenovo TH54 headphones feature intuitive touch controls for easy management of music and calls:
- Play/Pause Music: Tap once on either earbud.
- Answer/End Call: Tap once on either earbud.
- Reject Call: Press and hold for 2 seconds on either earbud.
- Next Track: Double-tap the right earbud.
- Previous Track: Double-tap the left earbud.
- Adjust Volume: Triple-tap the right earbud to increase volume; triple-tap the left earbud to decrease volume.
- Activate Voice Assistant: Press and hold for 3 seconds on either earbud.
5. Charging Instructions
5.1 Charging the Headphones
Insert the headphones into the charging case. The LED indicator on the headphones will turn red when charging and turn off when fully charged.
5.2 Charging the Charging Case
Connect the USB-C cable to the charging case and a 5V/1A power adapter or computer USB port. The LED indicators on the charging case will light up to show the remaining power.
6. Safety & Compliance
6.1 Safety Warnings
- Do not use the headphones at high volume for extended periods to avoid hearing damage. The World Health Organization recommends keeping the volume below 85dB for daily use.
- Keep the product away from water, fire, high temperature, and humid environments. Do not immerse it in water (IPX5 only protects against sweat and splash).
- Do not disassemble, modify, or repair the product by yourself. Any unauthorized operation may void the warranty and cause safety hazards.
- Keep the product and accessories out of reach of children under 3 years old to prevent choking hazards (small parts like ear tips).
- If you experience discomfort or pain in your ears while using, stop using immediately and consult a doctor if necessary.
6.2 EU Compliance
This product complies with the essential requirements and other relevant provisions of Directive 2014/53/EU (Radio Equipment Directive) and Directive 2011/65/EU (RoHS Directive). CE marking is applied to indicate compliance with EU regulations.
6.3 Waste Electrical and Electronic Equipment (WEEE)
Do not dispose of this product as household waste. Please recycle it in accordance with local WEEE recycling regulations to protect the environment.
7. Specifications
| Feature | Specification |
|---|---|
| Product Type | Wearing Bluetooth Headphones |
| Model Number | TH54 |
| Brand Name | Lenovo |
| Bluetooth Version | V5.4 |
| Bluetooth Transmission Distance | Up to 10 meters / 33 feet |
| Speaker Size | Ø40mm |
| Frequency Response Range | 20 - 25000Hz |
| Speaker Impedance | 32Ω (up to 32 Ω) |
| Sensitivity | 32dB |
| Battery Capacity | 300mAh |
| Duration of Use (Battery Life) | About 30 hours |
| Charging Time | About 1.5 hours |
| Material | PC |
| Waterproof | Yes |
| With Microphone | Yes |
| Active Noise-Cancellation | Yes |
| Control Button | Yes |
| Volume Control | Yes |
| Charging Method | Cable (USB-C) |
| Certification | CE, FCC |
8. Troubleshooting
If you encounter any issues with your Lenovo TH54 headphones, please refer to the following common troubleshooting steps:
- No Power: Ensure the headphones and charging case are fully charged.
- Cannot Pair: Make sure Bluetooth is enabled on your device and the headphones are in pairing mode. Try restarting both the headphones and your device.
- No Sound: Check the volume levels on both your headphones and your connected device. Ensure the headphones are properly paired.
- Intermittent Connection: Move closer to your connected device to ensure you are within the 10-meter transmission range. Avoid obstacles that may interfere with the Bluetooth signal.
For more complex issues, please refer to the official support channels.
9. User Tips
Based on common user feedback and product features, here are some tips for optimal use:
- Comfortable Fit: The headphones feature an adaptive telescopic arm and 90-degree free rotation for a personalized fit. Adjust them to ensure the full earmuffs sit comfortably and provide an immersive sound experience.
- Maximize Battery Life: To achieve the advertised 30 hours of battery life, ensure the headphones are fully charged before extended use. Placing them back in the charging case when not in use will keep them topped up.
- Clear Calls: The noise-free call feature is designed to reduce environmental noise. For the best call quality, ensure the microphone is not obstructed.
- Sound Quality: The TH54 boasts HIFI stereo sound and bass tuning enhancement. For the best audio experience, use high-quality audio sources.
10. Warranty and Support
For warranty information and customer support, please refer to the documentation provided with your purchase or visit the official Lenovo support website. You can also find additional information and a downloadable PDF version of the user manual here.
