POWER SUPPLY: WITH LI-ION BATTERY, OR DC 5V(USB CABLE FOR PC)                                                                                                                                                                           OUTPUT POWER:2W*1                                                                                                                       FREQUENCY REPONSE:275Hz-20KHz                                                                                             PRODUCT SIZE: 9*5.6CM(OUT)   9*4.2CM(IN)                                                                                           Selling points:  
1.Power sound with small size                                                                                                               2.Support iphone, ipod, mp3/4, computer etc.                                                                                    3.Easy to take and enjoy everywhere.