[07/08/2018] Optoma UHL55 高畫質投影機,支援4K超高解析度,支援語音助理,亮度1,500 ANSI lumens,Optoma UHL55 Compact True 4K HDR LED UHD Smart Projector, Works with Alexa and Google Assistant for Home Theaters and Outdoors, with Built-in Wireless Speaker,定價$1499,目前特價$999 USD。Prime境內免運費 (學生可以免費試用Prime)。哪裡買:amazon 。