New Open Box Sony CFD-S350 CD/Cassette/Radio Portable Boombox w/Remote Fully Tested. This Sony CFD-S350 (CFDS350) Portable Boombox with Remote is the perfect addition to your audio collection. Because the box had been opened I completely tested it to insure it was fully working. Everything works fine and this box has great sound. I put batteries in the remote also and if fully controls the boombox. The boombox is brand new and comes in its original box. The box has some shelf wear with labels and tears.