1. Safety Warnings
Read all warnings and instructions carefully before using the product to avoid personal injury, property damage, or product failure.
- Do not use the product in explosive environments (such as areas with flammable gases, dust, or liquids) to prevent fire or explosion hazards.
- Keep the product away from children under 3 years old. Small parts (such as ear tips) may cause choking if swallowed.
- Do not expose the product to extreme temperatures (below -10°C or above 45°C), direct sunlight, open flames, or high humidity environments, as this may damage the battery and internal components.
- Use only the original charging cable and a 5V/1A power adapter for charging. Do not use fast-charging adapters, as this may cause overheating, short circuits, or battery damage.
- Do not disassemble, crush, puncture, or burn the product or its charging case, as this may cause battery leakage, overheating, or explosion.
- If you experience discomfort (such as ear pain, dizziness, or tinnitus) while using the product, stop using it immediately and consult a doctor.
- The product contains small magnets. Keep it away from pacemakers, hearing aids, and other medical devices, as magnets may interfere with their normal operation.
2. Product Overview
These Bluetooth earbuds adopt advanced Bluetooth 5.3 technology, supporting stable connection within 10 meters (without obstacles). They feature touch control, noise reduction, and long battery life, suitable for daily use, sports, and office scenarios.
2.1 Package Contents
The package includes the following items:
- 1 x Pair of Bluetooth Earbuds
- 1 x Charging Case
- 1 x USB-C Charging Cable
- 3 Pairs of Ear Tips (S/M/L)
- 1 x User Manual (EU Version)
2.2 Technical Specifications
| Specification | Detail |
|---|---|
| Bluetooth Version | Bluetooth 5.3 |
| Bluetooth Protocols | HSP1.2, HFP1.6, A2DP1.3, AVRCP1.5 |
| Frequency Range | 2402-2480MHz (complies with EN 300 328) |
| Transmission Distance | Up to 10 meters (without obstacles) |
| Earbud Battery Capacity | 50mAh (3.7V) |
| Charging Case Battery Capacity | 500mAh (3.7V) |
| Playback Time | About 3-8 hours (varies by volume and usage scenario) |
| Total Playback Time (with Charging Case) | About 20-30 hours |
| Charging Time | Earbuds: ~1 hour; Charging Case: ~2 hours |
| Operating Temperature | -10°C ~ 45°C |
| SAR Value | ≤2.0W/kg (10g tissue average, complies with EN 62311) |
| Material | ABS |
| Features | Waterproof, With microphone, Active Noise-Cancellation, HiFi Headphone, Sport Earphones |
| Communication | True wireless |
| Style | OWS ear hook headphones |
| Certification | CE, FCC, RoHS |
3. Basic Operations
3.1 Power On/Off
- Power On: Take the earbuds out of the charging case, and they will automatically power on and enter pairing mode (with a prompt tone and red-blue alternating flashing lights).
- Power Off: Put the earbuds back into the charging case and close the lid; they will automatically power off and start charging. Alternatively, long-press the touch button for 5 seconds to power off manually.
3.2 Pairing and Connection
- First Pairing: After powering on, the two earbuds will automatically pair with each other. Open the Bluetooth function on your device (phone, tablet, etc.), search for the earbuds' device name (e.g., "TWS-EU01"), and click to connect. The indicator light will stop flashing when connected successfully.
- Reconnection: After the first successful pairing, the earbuds will automatically reconnect to the last connected device when powered on (if the device's Bluetooth is enabled).
- Multi-device Connection: The earbuds support connecting two devices at the same time. After connecting to the first device, turn off the Bluetooth of the first device, pair and connect to the second device, then turn on the Bluetooth of the first device again to complete multi-device connection.
3.3 Touch Control
Both earbuds support touch control; the operation functions are as follows:
- Play/Pause Music: Single tap either earbud.
- Answer/End Call: Single tap either earbud when there is an incoming call.
- Reject Call: Long-press the touch button for 1 second when there is an incoming call.
- Next Track: Triple tap the right earbud.
- Previous Track: Triple tap the left earbud.
- Volume Up: Double tap the right earbud.
- Volume Down: Double tap the left earbud.
- Wake Up Voice Assistant (Siri/Google Assistant): Long-press the touch button for 1.5 seconds when connected to a device.
- Switch Language (English/Chinese): Five taps either earbud.
4. Charging Instructions
- Charging the Earbuds: Put the earbuds into the charging case (ensure they are properly aligned with the charging contacts). The earbud indicator light will stay on during charging and turn off when fully charged.
- Charging the Charging Case: Connect the USB-C charging cable to the charging case and a 5V/1A power adapter. The charging case indicator light will flash during charging and turn off when fully charged.
- Note: Use only the original charging cable and a compliant power adapter. Do not charge the product in high-temperature or high-humidity environments.
5. Noise Reduction Function
This product supports active noise reduction (ANC) and transparency mode.
- Enable ANC: Double tap the left earbud twice quickly (or follow the touch control settings). The prompt tone will indicate that ANC is enabled.
- Enable Transparency Mode: Double tap the left earbud twice quickly again to switch to transparency mode, which allows you to hear the surrounding environment while wearing the earbuds.
- Disable Noise Reduction: Double tap the left earbud twice quickly again to disable the noise reduction function.
6. Maintenance and Care
- Keep the earbuds and charging case clean. Use a dry, soft cloth to wipe the surface and charging contacts regularly to avoid dust accumulation.
- Replace the ear tips regularly (every 1-3 months) to ensure comfort and sound quality, and to prevent bacterial growth.
- If the product gets wet, dry it with a dry cloth immediately and place it in a well-ventilated place to air dry. Do not use a hair dryer or other heating equipment to dry it.
- Store the product in a cool, dry place when not in use for a long time. Charge the battery to 50% before storage to extend battery life.
- Do not use harsh chemicals (such as alcohol, bleach) to clean the product, as this may damage the surface and internal components.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Earbuds cannot power on | Battery is exhausted; poor contact with charging case | Charge the earbuds for 30 minutes; reposition the earbuds in the charging case. |
| Bluetooth connection is unstable | Exceeding transmission distance; obstacles or interference | Move closer to the connected device; remove obstacles; keep away from other electronic devices. |
| No sound or low sound | Ear tips are blocked; volume is too low; incorrect connection | Clean the ear tips; adjust the volume; re-pair the earbuds with the device. |
| Touch control is not responsive | Earbuds are wet; touch surface is dirty | Dry the earbuds; clean the touch surface with a dry cloth. |
| Battery drains quickly | ANC is enabled for a long time; high volume; low temperature | Disable ANC when not needed; reduce volume; use in normal temperature environment. |
8. Compliance Information
8.1 RoHS Compliance Statement
This product complies with the RoHS Directive 2011/65/EU and its amendment directives. The content of hazardous substances in the product does not exceed the limit requirements:
- Lead (Pb): ≤0.1%
- Mercury (Hg): ≤0.1%
- Cadmium (Cd): ≤0.01%
- Hexavalent Chromium (Cr(VI)): ≤0.1%
- Polybrominated Biphenyls (PBBs): ≤0.1%
- Polybrominated Diphenyl Ethers (PBDEs): ≤0.1%
8.2 WEEE Compliance
This product is classified as electronic waste. Do not dispose of it with household waste. According to the EU WEEE Directive (2012/19/EU), you should return the product to the designated collection point for proper recycling when it reaches the end of its service life. This helps protect the environment and human health.
9. User Tips
- For optimal sound quality, ensure you select the correct size of ear tips that provide a snug fit in your ears.
- Regularly clean the charging contacts on both the earbuds and the case to ensure consistent charging.
- If experiencing connection issues, try resetting the earbuds and re-pairing them with your device.
- To maximize battery life, store the earbuds in their charging case when not in use.
10. Warranty and Support
For detailed warranty information and customer support, please refer to the official Lenovo website or contact your retailer. A comprehensive user manual in PDF format is also available for download: Download User Manual (PDF).
