Costzon BX-II
Costzon BX-II 61-Key Portable Keyboard Piano User Manual
Model: BX-II
Introduction
This user manual provides detailed instructions for the setup, operation, and maintenance of your Costzon BX-II 61-Key Portable Keyboard Piano. Please read this manual thoroughly before using the product to ensure proper function and longevity.

Figure 1: Costzon BX-II Keyboard Piano and Accessories
The image displays the Costzon BX-II 61-key portable keyboard piano in black, along with its essential accessories: a sustain pedal, a power adapter, and a black carrying case. The keyboard features white and black keys, a digital display, and various control buttons.
Package Contents
Verify that all items are present in the package:
- Costzon BX-II 61-Key Portable Keyboard Piano
- Sustain Pedal
- Power Adapter
- Carrying Case
- User Manual (this document)

Figure 2: Included Accessories
This image illustrates the items included in the package: the Costzon BX-II keyboard, a black carrying case, a sustain pedal, and a power charger. These components are essential for the keyboard's operation and portability.
Setup
1. Powering the Keyboard
The Costzon BX-II can be powered via the included power adapter or its internal rechargeable battery.
- Using the Power Adapter: Connect the power adapter to the DC IN port on the rear of the keyboard and plug the other end into a standard electrical outlet.
- Using the Internal Battery: The keyboard features a built-in 1750 mAh Lithium Ion Battery. Ensure it is charged for approximately 4 hours to achieve up to 12 hours of playing time. Charging can be done via a power bank, computer USB port, or power strip using the USB cable.

Figure 3: Battery Life and Charging
This diagram highlights the 12-hour battery life of the Costzon BX-II keyboard, powered by its 1750 mAh Lithium Ion Battery. It indicates that a full charge provides extended playing time.
2. Connecting Accessories
- Sustain Pedal: Connect the sustain pedal cable to the "Sustain" port on the rear of the keyboard.
- Headphones: For private practice, connect standard headphones to the "Headphone" jack.
- External Speakers: For amplified sound, connect external speakers to the "L-OUT" and "R-OUT" stereo output jacks.
- Microphone: Connect a microphone to the "MIC" port for vocal input.
- MP3 Player: Connect an MP3 player or other audio source to the "MP3" input to play along with your favorite tracks.
- USB/MIDI Connection: Use the USB port to connect the keyboard to a computer or other smart devices for MIDI functionality and enhanced learning experiences.

Figure 4: Control Panel and Rear Ports
This image provides a detailed view of the Costzon BX-II keyboard's control panel, showing buttons for power, digital display, metronome, chord, demo, drum kit, record, play, sustain, vibrato, volume, rhythm, tone, tempo, and transpose. The rear panel ports are also labeled, including Left Stereo Output, Right Stereo Output, Microphone, MP3, Sustain, LED, and USB.
Operating Instructions
Basic Operation
- Power On/Off: Press the Power button to turn the keyboard on or off.
- Volume Adjustment: Use the Vol+ and Vol- buttons to adjust the master volume.
- Tone Selection: The keyboard features 128 tones. Use the Tone+ and Tone- buttons to cycle through available instrument sounds. The digital display will show the current tone number.
- Rhythm Selection: The keyboard includes 128 rhythms. Use the Rhy+ and Rhy- buttons to select different rhythm patterns.
- Tempo Adjustment: Adjust the speed of rhythms and demos using the Tempo+ and Tempo- buttons.
- Transpose: Use the Transpose+ and Transpose- buttons to shift the pitch of the keyboard up or down.
Advanced Functions
- Demo Songs: Press the Demo button to play through the 20 built-in demonstration songs.
- Recording and Playback: Use the Record button to begin recording your performance and Play to listen to your recorded track.
- Sustain Function: Press the Sustain button on the control panel or use the connected sustain pedal to extend the decay of notes.
- Vibrato Function: Press the Vibrato button to add a vibrato effect to the played notes.
- MIDI/USB Connectivity: Connect the keyboard to a computer, iPad, laptop, or smartphone via the USB/MIDI interface to utilize music software for learning, composition, and advanced control.

Figure 5: MIDI Function Connectivity
This image illustrates the MIDI functionality of the Costzon BX-II keyboard, demonstrating its ability to connect to various devices such as iPads, computers, laptops, and smartphones, enabling integration with music production and learning software.

Figure 6: Teaching and Learning Features
This image depicts the teaching and learning capabilities of the Costzon BX-II keyboard, showcasing how it can be used for connecting arrangement software via MIDI and connecting to musical apps via Bluetooth, facilitating interactive learning experiences.
Maintenance
- Cleaning: Use a soft, dry cloth to wipe the surface of the keyboard. For stubborn dirt, slightly dampen the cloth with water. Avoid using abrasive cleaners or solvents.
- Storage: When not in use, store the keyboard in its carrying case to protect it from dust and physical damage. Store in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. If storing for an extended period, charge the battery to about 50% every few months.
- Handling: Handle the keyboard with care. Avoid dropping it or subjecting it to strong impacts, as this can damage internal components.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Keyboard does not power on. | Battery is depleted or power adapter is not connected properly. | Charge the battery or ensure the power adapter is securely connected to both the keyboard and a working outlet. |
| No sound from speakers/headphones. | Volume is too low, headphones/speakers not connected correctly, or tone volume is set to zero. | Increase master volume. Check headphone/speaker connections. Select a different tone or ensure tone volume is not muted. |
| Sustain pedal not working. | Pedal not connected properly or sustain function is not activated. | Ensure the sustain pedal is fully inserted into the correct port. Activate the sustain function via the control panel button if applicable. |
| MIDI connection issues. | Incorrect cable, driver issues, or software settings. | Use the correct USB cable. Install necessary drivers if prompted by your computer. Check MIDI input settings in your software. |
Specifications
- Model: BX-II
- Keys: 61 Semi-Weighted Keys
- Dimensions (L x W x H): 35.2" x 8.4" x 2.5"
- Net Weight: 11 lbs
- Battery: 1750 mAh Lithium Ion Battery
- Max. Playing Time: 12 hours (after 4 hours charging)
- Tones: 128
- Rhythms: 128
- Demo Songs: 20
- Connectivity: USB/MIDI, Headphone, Microphone, MP3 In, L/R Stereo Output, Bluetooth (for app connection)
- Material: Acrylonitrile Butadiene Styrene, Aluminum Alloy
- Certification: ASTM

Figure 7: Product Dimensions
This image provides a visual representation of the Costzon BX-II keyboard's dimensions, indicating a length of 35.2 inches, a width of 8.4 inches, and a height of 2.5 inches, highlighting its compact and portable design.

Figure 8: Key Features Overview
This image highlights key structural and audio features of the Costzon BX-II keyboard, including its two external speakers for enhanced sound, anti-slip feet pads for stability, 61 thickened keys for a better playing experience, and a durable aluminum alloy body for longevity.
Warranty and Support
For warranty information and technical support, please contact Costzon customer service. Details can typically be found on the official Costzon website or through your purchase platform.
Online Support: Visit the Costzon Store on Amazon for product information and support resources.
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