Retro Mini Card Wireless TV Mini Bluetooth Speaker

Product information:
Power type: USB
Power supply mode: Built-in lithium battery
Color: white, pink, black, green
Frequency range: 100HZ-20KHZ
Processing Method: customized as required
Interface Type: USB
Applicable scenarios: desktop, mobile/Portable
Channel: 2
Applicable people: general
Shell Material: Plastic
Operation mode: Button
Function: card insertion