[01/13/2016] Urge Basics Cuatro 系列藍芽無線喇叭，Urge Basics Cuatro Powerful Bluetooth Portable Wireless Speaker with Bass+ Technology – Includes Carrying Case and Charging Cable; Compatible with Smartphones, Tablets and Mp3 Players with Bluetooth Capability, Blue，定價$79.99，目前特價$29.99，使用折扣碼 5U7P6JVA 之後，可以折扣$10，等於只要$19.99 USD。Prime境內免運費 (學生可以免費試用Prime)。哪裡買: BobTronics via amazon。