INPUT SUPPLY: 5V/500mA, SPEAKER IMPEDANCE : 30 to 32ohm, CHARGING TIME : 3HOURS, BATTERY TYPE : Li- Polymer, BATTERY CAPACITY : 20maH. PLAYTIME : 4.5 hours @ FULL CHARGE. WIRELESS RANGE :10 METER, COLOR : BLACK, SPEAKER SOUND : STEREO SOUND, FREQUENCY RESPONSE : 20Hz to 20KHz. AUDIO CONTROLS : Play/Pause. Vol+/Previous. Vol-/Next Call