... speaker for laptop Key Features:• Play Mp3 WMA music• Flash Built-in 8GB (1GB to 8GB Optional)• Support TF Card • Line ... device, like PC, Mp3, Mp4 player, etc. • FM function included• Built-in lithium battery, working 10 hours • High quality speaker: 1 ... AliExpress Store (Store No.: 507803). Mini Sports MP3 Speaker with built-in FM, 8GB built-in flash memory