譬如象这个,体积不太大,音质还算过得去:
http://www.google.com/products/catalog?rlz=1C1GGLS_enUS291US303&sourceid=chrome&q=Harman/Kardon+Go+%2B+Play&um=1&ie=UTF-8&cid=12175329609758005593#ps-sellers
http://www.google.com/products/catalog?rlz=1C1GGLS_enUS291US303&sourceid=chrome&q=Harman/Kardon+Go+%2B+Play&um=1&ie=UTF-8&cid=12175329609758005593#ps-sellers