• The 4000mAh  battery can last for a long time to meet your live broadcast or singing needs
• Bluetooth/accompaniment/TF card/OTG input, multiple connection methods, easily handle more scenarios
• IOS/Android/Windows fully compatible, intelligent compatible with 99% live broadcast software
• Digital DSP processing chip is adopted to realize independent adjustment, high and low pitch, reverberation, accompaniment, recording, etc.
• Pop/Subwoofer/Pure Vocal mode, one button switching, you can choose the desired effect as you want

Specification: 

• Function:
• Sound card function: yes
• Bluetooth-compatible speaker function: yes
• Card reader: TF card
• Built-in Battery Playback: Yes
• Play while charging: yes
• Low Power Indicator: Yes (Beep)
• Supported audio formats: MP3 WAV WMA FLAC APE
• Sound adjustment: treble, mid-bass adjustment; accompaniment, reverberation, recording adjustment; microphone volume adjustment; speaker volume adjustment
• Lighting control: Aperture with self-flashing seven-color lights; left and right potentiometers always turn on three-color lights; spectrum light under the potentiometer jumps with the size of the music
• Audio switch: Yes (there is no sound after the audio is turned off, and the sound card function can be used normally)
• Function keys: 12 keys
• Sound effect keys: 6 keys
• Special effect keys: 12 keys
• Bluetooth-compatible switch: support
• Bluetooth-compatible playback operations: pause, previous song, next song
• Power Specifications:
• Power supply (adapter): DC 5V/3A
• Battery: Built-in 7.4V/4000mAh (when the power amplifier is turned on, the battery can be used for 3 to 3.5 hours)
• Power indicator light (LED: power on: white light; charging: red light; low power state: prompt tone 2 minutes/time
• Charging time:
• Quick charge (power off) 4.5-5 hours
• Slow charge (charge while playing, power amp moderately on) 9-12 hours
• Speaker Specifications:
• Model: full frequency speaker 4Ω5W
• Size: 52x52x32mm
• Rated impedance: 4Ω±15%
• Rated power: 5W
• Frequency range: F0-20KHZ
• Characteristic sensitivity: 84dB±2dB
• Resonant frequency: 400HZ±20%
• Harmonic distortion: ≤5%
• Audio Performance Specifications:
• Analog audio output: LT/RT, stereo
• Dynamic range 1kHz: ≥80dB
• Crosstalk: ≥70dB
• Signal-to-noise ratio: ≥85dB
• Output level (Vrms): Vrms (1.0~2.0V 10kR)
• Headphone output power: 5mW x2CH
• Speaker output power (rated value): 5W x2CH
• Speaker output power (peak to peak): 10W x2CH
• Frequency response: 5MHz (<-3dB)