Listen to your favourite music wherever you go with this portable and lightweight speaker! Simply plug the 3.5mm audio jack into your music device and switch the speaker on for great quality sound. Try plugging multiple pets together for louder volume! To charge, plug the included charging cable into a USB port.Compatible with most smart phones and tablets.Frequency response: 100Hz – 20KHz.Power input (for charging): 5v via USB mini port. Output power: 2WBuilt-in rechargeable battery (200mA)2 assorted pug and kitten styles packaged in a PVC gift box in a 12 piece CDU.