1. Material: ABS, electronic components 2. Mode: bluetooth, accompaniment, card reader 3. Horn: 5Wx2 4. Bluetooth version: 5.0 5. Pointing feature: heart-shaped pointing 6. Channel 5.1 7. Signal-to-noise ratio: 75dB 8. Frequency response range: 20Hz-20KHz 9. Interface: TYPE-C/USB-C 10. Built-in battery: 4000mAh lithium battery 11. Music playing time: 3-5 hours 12. Audio off use time: 10-15 hours 13. Input: DC5V/3A 14. Charging time: 3-4 hours 15. Multiple connection methods 16. Adopt digital DSP processing chip, support independent adjustment of high/middle/bass, reverberation, accompaniment, recording, etc. 17. HIFI sound quality, clear and full sound, surround sound effect 18. Product size: 41 x 5 x 5 cm Packing list: -Black/White: Sound Card Speaker x 1, Shoulder Strap x 1, Charging Cable x 1, Accompaniment Cable x 1 -Dual microphone model: sound card speaker x 1, microphone x 2, charging cable x 1, accompaniment cable x 1, microphone cable x 1, data cable x 1, sponge case x 2 -Universal: sound card speaker x 1, microphone x 2, charging cable x 1, accompaniment cable x 1, microphone cable x 1, data cable x 1, sponge case x 2, 8 Pin connector x 1, Micro cable to Micro cable x1