Line-in function, connecting computer, MP3, MP4, mobile phone output playing; Support audio format: MP3 / WAV (below 384Kbps); LED indicator: support; Play / Pause / FWD / PREV function; Support Micro SD/TF card music files playing; Support AUX line-in; Output: 2 x 3W; Power supply: 5V; Voltage: DC 5V; Built-in Lithium battery; Weight: 115g; Dismension: 80mm (L) x 50mm (W) x 50mm (H)