1. Introduction
Thank you for choosing the Zamkol ZK606 Pro Bluetooth Speaker. This manual provides essential information for setting up, operating, and maintaining your speaker. Please read it carefully before use to ensure optimal performance and longevity of your device.

Image 1.1: The Zamkol ZK606 Pro Bluetooth Speaker, showcasing its cylindrical design and control buttons.
2. Package Contents
Please check the package for the following items:
- Zamkol ZK606 Pro Bluetooth Speaker
- USB Type-C Charging Cable
- Auxiliary Audio Cable
- User Manual
3. Product Overview
3.1 Speaker Components

Image 3.1: Top-down view of the Zamkol ZK606 Pro, highlighting the control buttons on the speaker's surface.
The speaker features intuitive controls for easy operation:
- Power Button: Press and hold to turn on/off.
- Volume Up (+): Increase volume.
- Volume Down (-): Decrease volume.
- Play/Pause Button (Triangle): Play or pause audio.
- Bluetooth/TWS Button (Bluetooth Symbol): Initiate Bluetooth pairing or TWS pairing.
- Mode Button (Circle): Switch between Bluetooth and Aux-in modes.
3.2 Ports and Indicators

Image 3.2: Close-up view of the speaker's side panel, revealing the charging and auxiliary input ports.
- USB Type-C Port: For charging the speaker.
- AUX-in Port: For wired audio connection.
- LED Indicator: Displays power, charging, and Bluetooth status.
4. Setup
4.1 Charging the Speaker
Before first use, fully charge the speaker. The ZK606 Pro features a 5200 mAh battery, providing up to 20 hours of playtime on a full charge.
- Connect the USB Type-C charging cable to the speaker's Type-C port.
- Connect the other end of the cable to a USB power adapter (not included) or a computer's USB port.
- The LED indicator will show charging status. A full charge typically takes about 4 hours.

Image 4.1: The speaker illustrating its 20-hour battery life, suitable for extended use.
4.2 Power On/Off
- To power on, press and hold the Power Button until the LED indicator lights up.
- To power off, press and hold the Power Button again until the LED indicator turns off.
4.3 Bluetooth Pairing
The ZK606 Pro uses advanced Bluetooth 5.0 technology for stable connections.
- Ensure the speaker is powered on and in Bluetooth pairing mode (LED indicator will flash).
- On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "ZK606 Pro" from the list of devices.
- Once connected, the LED indicator will turn solid blue, and you will hear an audible confirmation.

Image 4.2: The speaker connected via Bluetooth 5.0 to a smartphone on a desk.
4.4 True Wireless Stereo (TWS) Pairing
For an immersive stereo experience, you can pair two ZK606 Pro speakers together.
- Ensure both ZK606 Pro speakers are powered on and not connected to any other Bluetooth device.
- On one speaker (this will be the primary speaker), press the Bluetooth/TWS Button twice. The speaker will enter TWS pairing mode.
- The primary speaker will automatically search for and connect to the second speaker.
- Once connected, the LED indicators on both speakers will change, and you will hear a confirmation sound.
- Now, connect your device to the primary speaker via Bluetooth as described in section 4.3.

Image 4.3: Two Zamkol ZK606 Pro speakers paired for True Wireless Stereo, enhancing the audio experience.
5. Operating Instructions
5.1 Basic Controls
- Play/Pause: Press the Play/Pause Button once.
- Volume Up: Press the + Button.
- Volume Down: Press the - Button.
- Next Track: Press and hold the + Button.
- Previous Track: Press and hold the - Button.
5.2 Hands-Free Calling
The built-in microphone allows for hands-free calls when connected via Bluetooth.
- Answer Call: Press the Play/Pause Button once.
- End Call: Press the Play/Pause Button once during a call.
- Reject Call: Press and hold the Play/Pause Button.
5.3 Aux-in Mode
Connect devices without Bluetooth capability using the auxiliary audio cable.
- Connect one end of the auxiliary audio cable to the speaker's AUX-in port.
- Connect the other end to the audio output of your device.
- Press the Mode Button on the speaker to switch to Aux-in mode.
6. Maintenance
6.1 Cleaning
Wipe the speaker with a soft, damp cloth. Do not use abrasive cleaners or solvents.
6.2 Storage
Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
6.3 Water Resistance (IPX7)

Image 6.1: The speaker submerged in water, demonstrating its IPX7 waterproof rating.
The ZK606 Pro is IPX7 rated, meaning it can be submerged in water up to 1 meter for 30 minutes. Ensure the charging port cover is securely closed before exposing the speaker to water. This protection is for fresh water only; avoid salt water or chlorinated water to prevent damage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not turn on | Low battery | Charge the speaker fully. |
| Cannot pair via Bluetooth | Speaker not in pairing mode / Device Bluetooth off / Speaker already connected to another device | Ensure speaker is in pairing mode. Turn on Bluetooth on your device. Disconnect from other devices. |
| No sound | Volume too low / Incorrect mode / Device not playing audio | Increase speaker and device volume. Ensure correct mode (Bluetooth/Aux-in). Check audio playback on device. |
| TWS pairing fails | Speakers too far apart / Already connected to other devices | Ensure speakers are close to each other. Disconnect both speakers from any other Bluetooth devices before initiating TWS pairing. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | ZK606 Pro |
| Bluetooth Version | 5.0 |
| Max Output Power | 20 Watts |
| Audio Output Mode | Stereo |
| Battery Capacity | 5200 mAh (Lithium-ion) |
| Playtime | Up to 20 hours |
| Charging Time | Approximately 4 hours (via Type-C) |
| Waterproof Rating | IPX7 |
| Connections | Bluetooth, Auxiliary |
| Dimensions | 22.4 x 11 x 9.2 cm |
| Weight | 760 grams |
| Compatible Devices | Smartphone, laptop, tablet |
9. Safety Information
- Do not expose the speaker to extreme temperatures or direct sunlight for prolonged periods.
- Keep the speaker away from heat sources, sharp objects, and corrosive materials.
- Do not attempt to disassemble or modify the speaker. This will void the warranty.
- Ensure the charging port cover is sealed when using the speaker near water.
- Use only the provided charging cable or a certified equivalent.
10. Warranty and Support
Zamkol products are designed for reliability and performance. For warranty information and customer support, please refer to the warranty card included in your package or visit the official Zamkol website. Please retain your proof of purchase for warranty claims.
For further assistance, please contact Zamkol customer service.