... ,convenient for other audio devices 4, easy to control the volum 5, portable Features:Left and right sound channels can be connected ... way stretched coil at the bottom, retracting and releasing internally, can use the 3.5 audio cable at the bottom to play audio ... opening the resonance chamber, the height is 70mm)Net weight: 80g easy to control the volume , lovely speaker for IPOD/iphone and other ...