1. Important Safety Information
Please read all instructions carefully before using the product. Keep this manual for future reference.
- Do not expose the device to water or excessive moisture.
- Avoid extreme temperatures.
- Do not disassemble or attempt to repair the device.
- Use only the provided charging cable.
- Keep out of reach of small children.
2. Package Contents
Verify that all items are present in the package:
- 1 x HWWR Portable Karaoke Machine (D37)
- 1 x Wireless Microphone
- 1 x USB Charging Cable
- 1 x User Manual (this document)
3. Product Overview
Familiarize yourself with the components of your HWWR Karaoke Machine.
Figure 3.1: Front view of the HWWR Portable Karaoke Machine with its wireless microphone. The machine features a central speaker and vibrant RGB LED lights around its perimeter.
Figure 3.2: Diagram illustrating the internal speaker components, including the DSP chip for enhanced sound quality and 2x5W speakers for clear audio output.
3.1 Main Unit Features
- Power Button: Turns the unit on/off.
- Volume Control: Adjusts the overall sound output.
- Microphone Volume Control: Adjusts the microphone input volume.
- Echo Control: Adjusts the echo effect for the microphone.
- Mode Button: Switches between Bluetooth, AUX, USB, and TF card modes.
- Light Button: Cycles through different LED lighting effects.
- USB Port: For USB drive playback.
- TF Card Slot: For TF (MicroSD) card playback.
- AUX Input: For connecting external audio devices via 3.5mm cable.
- Charging Port: USB-C for charging the unit.
3.2 Wireless Microphone Features
- Power Button: Turns the microphone on/off.
- Volume Buttons: Adjusts microphone volume.
- Voice Changer Button: Cycles through 6 different voice effects.
- Charging Port: USB-C for charging the microphone.
4. Setup
4.1 Charging the Device
Before first use, fully charge the karaoke machine and the wireless microphone.
- Connect the provided USB charging cable to the charging port on the karaoke machine.
- Connect the other end of the USB cable to a compatible USB power adapter (not included) or a computer USB port.
- The charging indicator light will illuminate. It will turn off or change color when fully charged.
- Repeat the process for the wireless microphone.
Note: A full charge typically takes approximately 3 hours for the main unit and less for the microphone.
Figure 4.1: Illustration of the charging process and battery specifications, showing 3500mAh battery, 8-10 hours play time, and 3 hours charging time.
4.2 Powering On/Off
To power on the karaoke machine, press and hold the Power Button until the indicator light illuminates. To power off, press and hold the Power Button again.
To power on the wireless microphone, press and hold its Power Button. It will automatically pair with the main unit when both are on and within range.
5. Operating Instructions
5.1 Bluetooth Mode
- Turn on the karaoke machine. It will automatically enter Bluetooth pairing mode (indicated by a flashing light or voice prompt).
- On your device (phone, tablet, PC), enable Bluetooth and search for "HWWR D37" (or similar name).
- Select the device to pair. Once connected, a confirmation sound will be heard.
- You can now play audio from your device through the karaoke machine.
Figure 5.1: The karaoke machine supports Bluetooth 5.0 for stable wireless connections, along with AUX, TF Card, and USB inputs for versatile audio playback.
5.2 AUX Input Mode
- Connect one end of a 3.5mm audio cable (not included) to the AUX input port on the karaoke machine.
- Connect the other end to the audio output of your external device (e.g., TV, MP3 player).
- Press the Mode Button on the karaoke machine until it enters AUX mode.
- Play audio from your external device.
5.3 USB/TF Card Playback
- Insert a USB drive or TF (MicroSD) card containing MP3 audio files into the respective port/slot.
- The machine will automatically switch to USB or TF card mode and begin playing audio. If not, press the Mode Button to select the correct mode.
5.4 Using the Wireless Microphone
- Ensure the microphone is charged and powered on. It should automatically connect to the main unit.
- Adjust the microphone volume using the dedicated control on the main unit or the volume buttons on the microphone itself.
- Use the Echo Control on the main unit to add reverberation to your voice.
- Press the Voice Changer Button on the microphone to cycle through 6 different voice effects (e.g., Professional, Female, Monster, Male, Baby, KTV Mode).
Figure 5.2: The wireless microphone offers six distinct voice changing modes, including Professional, Female, Monster, Male, Baby, and KTV Mode, for varied vocal effects.
5.5 LED Lighting Effects
The karaoke machine features dynamic RGB LED lights. Press the Light Button on the main unit to cycle through 6 unique disco lighting modes. The lights will synchronize with the music.
Figure 5.3: The karaoke machine displays various colorful light effects, enhancing the party atmosphere with dual-sided illumination that dances to the rhythm of your music.
6. Maintenance
- Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Store the karaoke machine and microphone in a cool, dry place when not in use.
- Avoid dropping the device or exposing it to strong impacts.
- Regularly charge the battery to maintain its lifespan, even if not used frequently.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery. | Charge the device fully. |
| No sound from speaker. | Volume too low; incorrect mode selected; device not paired (Bluetooth). | Increase volume; press Mode button to select correct input; re-pair Bluetooth device. |
| Microphone not working. | Microphone off; low microphone battery; microphone not paired. | Ensure microphone is on; charge microphone; power cycle microphone and main unit to re-pair. |
| Sound quality is poor. | Source audio quality; interference; microphone too close to speaker. | Try a different audio source; move away from other electronic devices; maintain distance between microphone and speaker to avoid feedback. |
8. Specifications
- Model: D37 Karaoke machine
- Dimensions: 5 x 4 x 5 inches (L x W x H)
- Weight: 2.23 pounds
- Power Source: Corded Electric (via USB charging)
- Voltage: 5 Volts (DC)
- Output Wattage: 15 Watts
- Speaker Count: 2
- Frequency Response: 12 KHz
- Connectivity: Bluetooth 5.0, USB, AUX, TF Card
- Battery Capacity: 3500mAh (Main Unit)
- Play Time: 8-10 hours
- Charging Time: Approx. 3 hours
- Material: Acrylonitrile Butadiene Styrene (ABS), Metal
- Compatible Devices: Phones, iPads, Tablets, PCs, Laptops
9. Warranty and Support
This product comes with a 1-Year Warranty from the date of purchase.
For technical support or warranty claims, please contact HWWR customer service:
- Customer Support: Available 7/24 Hour
- After-sales Center: US Local After-sales Center
- Refer to your purchase platform or the HWWR official website for contact details.
Figure 9.1: HWWR provides 1-year warranty, 7/24 customer support, and a US local after-sales center for product assistance.
