... card reader function and play music from computer Support TF card,USB port, MP3 Format ,upto 8GB ... Quick Overview:This pretty easy carry Mini Speakers is a professional and powerful speaker for your wonderful life ... song,frequency and volume when power off* Support TF card,USB port, upto 8GB for convenience of unlimited ... 1 x Mini speaker1 x charger Support TF card,USB port, MP3 format 8GB Mini speakers ...