Lenovo K3
Lenovo K3 Thinkplus Portable Bluetooth Speaker User Manual
Model: K3
Introduction
Thank you for choosing the Lenovo K3 Thinkplus Portable Bluetooth Speaker. This compact and powerful speaker is designed to deliver immersive sound with rich bass, mids, and highs, featuring Bluetooth 5.0 connectivity and a built-in HD microphone for hands-free calls. This manual provides essential information for setting up, operating, and maintaining your speaker to ensure optimal performance and longevity.
Safety Information
- Do not expose the speaker to extreme temperatures, humidity, or direct sunlight.
- Avoid dropping or subjecting the speaker to strong impacts.
- Do not disassemble, repair, or modify the speaker yourself. Refer to qualified service personnel.
- Keep the speaker away from water and other liquids.
- Use only the provided charging cable or a certified equivalent.
- Clean the speaker with a soft, dry cloth. Do not use abrasive cleaners.
Package Contents
Please check the package contents upon opening:
- Lenovo K3 Thinkplus Portable Bluetooth Speaker
- USB Charging Cable
- User Manual (this document)
Product Overview
Familiarize yourself with the components of your Lenovo K3 speaker.

Image: Front view of the Lenovo K3 speaker, showcasing its compact grey design with the Lenovo logo.

Image: Side view of the Lenovo K3 speaker, highlighting the silicone button design and the portable lanyard for easy carrying.
Key Features:
- Metal Composite Diaphragm: Delivers HIFI-level sound quality with strong acoustic configuration.
- 360-degree Full-Range Sounding: Omni-directional sound technology for evenly diffused audio.
- Bluetooth 5.0: Provides stable signal, greater wireless range (up to 33ft), and efficient connection.
- Dual Pairing: Connect two K3 speakers for true stereo sound.
- Built-in HD Microphone: For clear hands-free calling with noise cancellation.
- Portable Design: Small, lightweight, and includes a lanyard for easy transport.
- Long Battery Life: Up to 6 hours of listening time on a single charge.

Image: An exploded view illustrating the metal composite diaphragm and internal speaker components, emphasizing HIFI-level sound quality.

Image: The Lenovo K3 speaker positioned to illustrate its 360-degree full-range sounding capability, ensuring balanced audio diffusion.

Image: A detailed view of the Bluetooth 5.0 chip, highlighting its role in providing stable and efficient wireless connectivity for the speaker.
Setup
1. Charging the Speaker:
Before first use, fully charge your Lenovo K3 speaker. Connect the provided USB charging cable to the speaker's charging port and the other end to a USB power adapter (not included) or a computer's USB port. The charging indicator light will show the charging status (e.g., red for charging, off when fully charged). A full charge takes approximately 3 hours.

Image: An illustration detailing the speaker's battery life (6 hours listening) and charging time (3 hours) with a 1200mAh battery capacity.
Operating Instructions
1. Power On/Off:
- Power On: Press and hold the Power button for a few seconds until you hear an audible prompt or see the indicator light illuminate.
- Power Off: Press and hold the Power button again for a few seconds until you hear an audible prompt or the indicator light turns off.
2. Bluetooth Pairing:
- Ensure the speaker is powered on and in pairing mode (the indicator light will typically flash blue rapidly).
- On your device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select "Lenovo K3" from the list of found devices.
- Once paired, the speaker will provide an audible confirmation, and the indicator light will turn solid blue.
- The speaker will automatically reconnect to the last paired device when powered on, if the device's Bluetooth is active and within range.
3. Dual Pairing (TWS Function):
To achieve true wireless stereo sound, you can pair two Lenovo K3 speakers together:
- Ensure both K3 speakers are powered off.
- Power on both speakers. They will automatically attempt to connect to each other.
- Once connected, one speaker will act as the master and the other as the slave. The master speaker's indicator light will flash, indicating it's ready to pair with your device.
- On your device, search for Bluetooth devices and select "Lenovo K3". Only one "Lenovo K3" will appear.
- After successful pairing, both speakers will play audio in stereo.
4. Making Calls (Built-in HD Microphone):
- When connected to your smartphone, the speaker's built-in HD microphone allows for hands-free calling.
- Answer Call: Press the Multi-function button (usually the Play/Pause button) once to answer an incoming call.
- End Call: Press the Multi-function button once again to end the call.
- Reject Call: Press and hold the Multi-function button to reject an incoming call.
- Redial Last Number: Double-press the Multi-function button to redial the last dialed number.
5. Music Playback:
- Play/Pause: Press the Multi-function button once to play or pause music.
- Next Track: Press the "+" (Volume Up) button for a few seconds to skip to the next track.
- Previous Track: Press the "-" (Volume Down) button for a few seconds to go to the previous track.
- Volume Up: Short press the "+" button to increase volume.
- Volume Down: Short press the "-" button to decrease volume.

Image: The Lenovo K3 speaker shown in an outdoor setting, emphasizing its suitability for exercise and continuous connectivity while on the go.
Maintenance
- Cleaning: Wipe the speaker with a soft, dry, lint-free cloth. Do not use harsh chemicals, cleaning solvents, or strong detergents.
- Storage: Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods.
- Battery Care: To preserve battery life, avoid fully discharging the battery frequently. Charge the speaker regularly, even if not in use.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on. | Low battery. | Charge the speaker fully. |
| Cannot pair with Bluetooth device. | Speaker not in pairing mode; device Bluetooth off; too far from speaker. | Ensure speaker is in pairing mode. Turn on device Bluetooth. Move device closer to speaker (within 33ft). Forget device on your phone and re-pair. |
| No sound or low volume. | Volume too low on speaker or device; speaker not connected. | Increase volume on both speaker and device. Ensure speaker is successfully paired. |
| Sound distortion at high volume. | Volume too high. | Reduce the volume. |
| Dual pairing not working. | Speakers not correctly initiated for TWS. | Ensure both speakers are off, then power them on simultaneously to allow them to connect to each other first. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Lenovo |
| Model Name | K3 |
| Connectivity Technology | Bluetooth 5.0 |
| Wireless Range | Up to 33 feet (10 meters) |
| Speaker Type | Outdoor, Portable |
| Audio Output Mode | Stereo (with dual pairing) |
| Speaker Maximum Output Power | 10 Watts |
| Battery Life | 6 Hours |
| Battery Capacity | 1200 mAh (Lithium Polymer) |
| Charging Time | Approximately 3 hours |
| Material | Plastic |
| Color | Grey |
| Item Weight | 250 Grams |
| Product Dimensions | 7.6D x 7W x 15.2H centimeters |
| Included Components | Lenovo BT speaker, USB Charging Cable, Manual |
| Special Features | 360° Stereo Sound, Dual Pairing Wireless Speaker, Built-in HD Microphone |
Warranty and Support
Lenovo products are designed for reliability and performance. For information regarding warranty coverage, technical support, or service, please refer to the warranty card included with your purchase or visit the official Lenovo support website. Please have your product model (K3) and serial number (if applicable) ready when contacting support.
For additional support, you may visit the Lenovo Store on Amazon.
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