Mini Bluetooth Speaker Size: Length 1 inch x Width 1 inch Portable easy to move Fashionable super fast 6 colors Black / Red / Blue / Pink / Gold / Silver USB / Bluetooth Built-in Microphone Power Source: Battery / AC Output: 3W Channels: 3 (2.1) Frequency: 100Hz - 200 KHz Playback Function: APE, MP3, FLAC.