[11/04/2018] GGMM M4 無線喇叭，[Apple Airplay Certified]GGMM M4 Wireless Speaker for Music Streaming,Wi-Fi Bluetooth Indoor Outdoor Speaker, Built-in Battery,10-Hour Playtime,Powerful 40W Audio Driver,Enhanced Bass,Multi Room Play，支援藍芽與Wi-Fi，支援多房間播放，目前特價$149.95，使用折扣碼 GGMMM4M3 之後，價格降為$79.99 USD。Prime境內免運費 (學生可以免費試用Prime)。哪裡買：GGMM via amazon。