... unimpeded support TFcard . Rechargeable Li-ion Battery mini digital sound box speaker aluminum housing1. Powered via: Built-in ... card, it can play the same as MP3 player (TF card is not included)3. Built-in ... Source: TF card,PC,MP3,MP4,MD,CD,DVD player, Mobile phone,etc 8. Switch available, volume adjustable9 ... yourself in the freedoom of music. The new sound principle will bring a new musical life style ...