Introduction
Thank you for choosing the Kisonli K4 Bluetooth Speaker. This manual provides essential information for the safe and efficient operation of your device. Please read it thoroughly before use and retain it for future reference.
The Kisonli K4 is a high-power 40W portable Bluetooth speaker designed for both indoor and outdoor use. It features dynamic LED lighting, enhanced bass, and versatile connectivity options to deliver a rich audio experience.
Product Overview
Package Contents
- Kisonli K4 Bluetooth Speaker
- Power Cable
- User Manual
Speaker Components and Controls
Familiarize yourself with the speaker's layout and controls:

Front view of the Kisonli K4 Bluetooth Speaker, showcasing the main speaker grille, LED light ring, and integrated carrying handle.
- Power Button: Press and hold to turn the speaker ON/OFF.
- Volume Controls: Dedicated buttons for increasing or decreasing volume.
- Play/Pause Button: Controls audio playback.
- Mode Button: Switches between different input modes (e.g., Bluetooth, AUX).
- LED Light Button: Controls the dynamic LED lighting effects.
- Charging Port: For connecting the power cable to recharge the battery.
Setup
Charging the Speaker
Before initial use, fully charge the speaker. Connect the provided power cable to the charging port on the speaker and plug the other end into a suitable power source. The LED indicator will show charging status and turn off or change color when fully charged.
Note: Use only the provided power cable or a compatible charger to avoid damage.
Powering On/Off
Press and hold the Power Button for approximately 3 seconds to turn the speaker ON or OFF. A sound prompt will indicate the power status.
Operating Instructions
Bluetooth Pairing
- Ensure the speaker is powered on and in Bluetooth pairing mode. The LED indicator will typically flash rapidly.
- On your device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select "Kisonli K4" from the list of devices.
- Once paired, the speaker will emit a confirmation sound, and the LED indicator will stop flashing.
The speaker will automatically attempt to reconnect to the last paired device when powered on.

The Kisonli K4 speaker connected wirelessly to a smartphone, illustrating its Bluetooth playback capability.
Audio Playback
- Volume Adjustment: Use the dedicated volume buttons on the speaker or your connected device.
- Play/Pause: Press the Play/Pause button to start or stop audio.
- Track Navigation: Use the next/previous track buttons (if available on the speaker) or your connected device.
LED Lighting Effects
Press the LED Light Button to cycle through different lighting modes or to turn the lights off. The dynamic LED lights enhance your listening experience, especially in low-light environments.
The Kisonli K4 speaker displaying its vibrant, colorful LED light show feature.
Other Input Modes
If your speaker supports other input modes (e.g., AUX-in, USB, TF card), press the Mode Button to switch between them. Connect your audio source accordingly.
Maintenance
Cleaning
Wipe the speaker with a soft, dry cloth. Do not use abrasive cleaners, alcohol, or chemical solvents, as these may damage the surface. Ensure no liquids enter the speaker openings.
Storage
Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, charge the battery periodically to maintain its lifespan.
Battery Care
The Kisonli K4 uses a built-in rechargeable battery. To prolong battery life:
- Avoid fully discharging the battery frequently.
- Do not expose the speaker to high temperatures.
- Charge the speaker at least once every three months if not in regular use.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not turn on | Low battery; Power button not pressed correctly | Charge the speaker; Press and hold the power button for 3 seconds |
| No sound | Volume too low; Device not paired; Incorrect input mode | Increase volume; Re-pair Bluetooth device; Switch to correct input mode |
| Bluetooth connection unstable | Device too far; Obstructions; Interference | Move device closer (within 10m/33ft); Remove obstructions; Avoid strong electromagnetic fields |
| LED lights not working | Lights turned off; Malfunction | Press the LED Light Button; Contact support if issue persists |
Specifications
Illustration of the Kisonli K4 speaker's strong sound wave output and stereoscopic surround sound quality.
| Feature | Detail |
|---|---|
| Brand | Kisonli |
| Model Name | K4 |
| Max Speaker Output Power | 40W |
| Frequency Response | 20 Hz (lower limit) |
| Connectivity Technology | Bluetooth, Wireless |
| Audio Output Mode | Stereo |
| Input Voltage | 7.4V |
| Mounting Type | Freestanding |
| Materials | Plastic, Fabric, Metal |
| Speaker Type | Soundbar |
| Special Features | Bluetooth Connectivity, Portable Design, LED Light, High Power Output, Bass Amplifier |
| Recommended Uses | Entertainment, Outdoor, Portable, Camping, Parties |
| Subwoofer Diameter | 10.16 cm (4 inches) |
| Color | Black |
| Water Resistance Level | Water Resistant (Not fully submersible) |
| Control Method | Touch, Push Button |
| Bluetooth Range | 10 meters (approx. 33 feet) |
| Surround Sound Channel Configuration | 2.1 |
| Impedance | 4 Ohm |
| Signal-to-Noise Ratio | 85 dB |
| Compatible Devices | Computers, Tablets, Laptops, Smartphones |
| Power Source | Battery Powered |
| Number of Batteries | 1 non-standard battery (included) |
| Included Components | Power Cable |
| Product Dimensions (D x W x H) | 40 x 7 x 7 cm |
| Item Weight | 650 grams |
Warranty and Support
This product is provided without a specific warranty. For any technical assistance or inquiries, please refer to the retailer where the product was purchased or visit the official Kisonli website for support resources.
Disclaimer: Kisonli is not responsible for any damage or malfunction caused by improper use, unauthorized modifications, or failure to follow the instructions in this manual.
Usage Scenarios
The Kisonli K4 speaker is versatile for various outdoor activities, including picnics, beach gatherings, and park relaxation.
The Kisonli K4 Bluetooth Speaker is designed for a wide range of applications:
- Outdoor Gatherings: Perfect for parties, barbecues, and social events in open spaces.
- Travel and Camping: Its portable design makes it an ideal companion for adventures and trips.
- Home Entertainment: Enhance your indoor audio experience with powerful sound and dynamic lights.