However, these flip flops give you all the comfort of crocs while disguising themselves as cute little beachy sandals! It charges my 12 very quickly. Fills good wife says, has arch They are well worth the price. If you have optical out on your tv, this unit has optical IN.  SOUND:Sub-bass extension is fair. So to refresh I purchased, received, opened, washed for use then put right into the damn trash end result good buy $10. Adaptive / Active noise cancellation is both for the audio and microphone. This is my second pair of them, my first were the white and black and now I have the gray and black. The back is very stiff and difficult for a young child to put on alone.