Hot sale ball pen with music 1,Size:17mm Dia x145mmH 2,Custom sound:0 ... logo is welcomed4.ABS plastic5.Please send your sound/music by MP3 or wave file.6.Please send the ... ROSH test8.Press the top of pen to play the music/pen9.It is nice products for promotion, holiday gift, ... We also produce a lot of plastic with sound product- sound/music bottle opener, sound/music keychain, Candle holder which you may ...