... manufacturers & suppliers CE,ROTH option Portable Guitar Speaker with FM,Wireless guitar speaker,mini guitar speaker manufacturer & suppliers Type: ... Audio Player, Mobile...Channels: 2 (2.0)Special Feature: Wireless, Portable, Minimp4 speaker: USB Portdigital volume control: Windows 2000 ... : SD/MMC Card slotSpecificationsDigital mini speaker, Built-in FM tuner, auto scanning, save up to 30 channels ...