... multi -functional charger with speaker, with multiple chargingport for Pad; Pad2; Phone3G; 4G/4S console.Use of ... With a 3.5mm audio input interface, support for other external audio device(such as MP3, MP4 ... video.With 1pc USB interface, can connect USB cable for charging all kinds ofdevices, such as: iPhone; ... 3.5mm Jack Audio Dock Speaker for Samsung PC MP3 MP4 Tablet Mobile Phone Amplifier Speaker