Casio WU BT10 Bluetooth Wireless MIDI and Audio Adapter for CT S1 ModelsPlugging Casio WU BT10 Bluetooth Wireless MIDI and Audio Adapter into a supported Casio instrument enables Bluetooth communication with smart devices for audio signals and MIDI data. It is compatible with CT S1000V CT S500 CT S1 CT S1 76 CT S400 CT S410 LK S450 PX S1100 PX S3100 PX S7000 PX S6000 PX S5000 AP 750 AP 550 AP S450 and works with smart devices like iPhone with iOS 13. 0 or later, iPad iPad OS 13. 0 or later, Android phones with Android OS