... P-MAX Mini Speaker is one low-voltage and low-power consumtion mini speaker, which supports 2.5 ... USB powering devices like computer, which is convenient and handy. Standard Accessory: P-MAX mini speaker, ... cable (USB charging), instruction bookTechnical Parameters:Output Power:3W Response Frequence:100HZ-15KHZBattery:Rechargeable Battery 280mAHOutput ... 500uA P-MAX Mini Speaker low-voltage and low-power