Portable speaker for IPod, iPhone & MP3
1. 4PCS speakers
2. Power output: ≥2W/channel
3. Input signal sensitivity: 500mV
4. Frequency response: 150Hz-18KHz
5. Signal to noise ratio: ≥60dB
6. Power input: 4XAA batteries or external AC Adapter 9V/800mA
7. Battery life: 10-16hours, Slkaline batteries
8. Material: ABS
Audio source: All audio player with 3.5mm Earphones jack
Speaker system: 2.0
Easy-to-Use Touch Controls _ Touch Volume Control: Just a touch increases or decreases the volume.