... + Fast delivery 4.metallic surface trea Vibration speaker with T-flash card Works with iPod, iPhone, mobile phones, computersSupport profiles Human ... iPod/iPhone, MP3/MP4 players, and moreVibration speaker with T-flash card and all of 3.5mm Port sound sources device ... -flash card(8G) Supports decoding MP3 music format Built-in high-capacity lithium battery-powered Play Time: 3.5-5 hours25. Parameters ...