The new line of Sony NW-S630FK series Walkman digital music players come with a detachable speaker unit. The new player is the thinnest in Sony Walkman series. The player measures 7.5 millimeters and weighs only 46 grams. The new Walkman players- NW-S630FK, NW-S630F and NW-S730F will be available in four colors and in 4GB, 8GB and 16GB capacities. They all support MP3, WMA, ATRAC, ATRAC Advanced Lossless, PCM, AAC, HE-AAC music formats, MPEG-4, H.264 AVC, WMV9 video formats, and JPEG image files. Other features include 2-inch LCD display, DSEE sound effect, built-in FM tuner and USB port. The speaker unit, which weighs 140 grams, doubles as a recharger. The 4-gigabyte Sony model will go on sale Oct. 11 for about 18,000 yen ($167); 8-gigabyte version will hit stores Nov. 8, and sell for about 22,000 yen ($205).