Works with all sound source with 3.5mm audio interface product like MP3 players, computers, mobile phones and CD players. USB powered. Built-in lithium battery with 3 hours working time. Rotatable housing. Speaker driver unit: 36mm.
Features: Battery capacity: 200mAh. Charging time: 2 hours. Subsequent charging time 2-4 hours.
Dimension: 6.4cm(L) x 6.4cm(H) 5.7cm(W)