オリジナル交換部品用ニンテンドー3ds bluetooth ir赤外線モジュールボード _ - AliExpress Mobile
Bluetooth Adapter so I can Play on the Shuttle with my AirPods : r/3DS
Amazon.co.jp: Nolan Tx Bluetooth Audio Transmitter for iPod for the Universal Bluetooth Wireless Stereo Music o-dyiotoransumittaadaputa, Zune, Zen, Sony Walkman, Pooh), MP3 Players, Portable Music Audio Player, Notebook, PC, Tablet, PSP, Nintendo
My (cheap and effective) 3DS Bluetooth Mod : r/3DS