1、Fitment: AUX IN adapter is suitable for Pioneer DEH series, compatible with all devices of the P series: DEH‑P2500 R, DEH‑P2600 R and so on. 2、Bluetooth Version: AUX IN module is bluetooth 5.0 version, and compatible with 2.0 3.0 4.0 other versions of Bluetooth. 3、Audio Format: Support commonly used MP3 format audio, but also support the WMA WAV FLAC, and other high quality audio format decoding. 4、Large Capacity Transmission: Non ordinary Bluetooth functions, can support DSD large capacity transmission. 5、Easy to Operate: Match your phone or tablet to bluetooth module, and choose Aux from your radio, then you can use your phone, tablet or MP3(They have blueooth function) to play music through car speakers.