[06/05/2020] Etymotic Research ER3SE Studio Edition 無線耳機，Etymotic Research ER3SE Studio Edition High Performance In-Ear Earphones (Detachable Balanced Armature Drivers, Noise Isolating, High Accuracy, Studio Grade Accuracy),Black，目前特價只要$99.66 USD。Prime境內免運費 (學生可以免費試用Prime)。哪裡買: amazon。