Full Set Of Computer Dedicated To Sound Card Singing Equipment $ 194.30 Product information : Pointing characteristics: heart pointing. Input voltage: 110V Bluetooth protocol: 2.1 Color: [E2 single sound card] upgraded sound qualitystandard Specifications: official standard, official standard+Apple MFI adapter, official standard+Type-C adapter, official standard+Apple MFI adapter+Type-C adapter Built-in battery capacity: no battery Endurance: 1-3 hours Signal-to-noise ratio: 100dB Frequency response range: 100HZ-20KHZ Packing list: Live audio cable 2 USB charging cable 1 Mobile phone stand 1 3 m monitor headphones 1 Sound card *1