Standard USB power plug, no battery power required. Can connect a variety of music playback devices, such as: mp3, MP4, mobile phones, computers, etc.
Output power: 3W x 2.
Working current: 280-590MA.
Working voltage: 5V-4.5V.
Speaker Type: Combination
Power Source: AC
Number of Loudspeaker Enclosure: 2
Crossover: Two-Way
Channels: 2 (2.0)
Support Apt-x: Yes
color: White / Black
Material:ABS+PS
size:25.5 x 5.1 x 6.3cm
Package Contents:
2 x Speaker
1 x Cable
1 x USB Charging Cable
1 x Connecting Cable