1.【Not Compatibility 】YOVDA 30-pin Bluetooth audio transmitter is not compatible with iPods before 2007, iPod Touch 2, iPod Touch 1, iPod Nano 6, iPod Mini (4GB), 2nd generation iPod Touch, 1st generation iPad Touch, iPod Classic (30GB), ipod 60GB,ipod 160GB,Ipod disk 80GB etc. | 2.【Wide Compatibility】The 30-pin audio adapter is compatible with Apple products with 30-pin connector, and is compatible with iPod Touch (3rd, 4th generation), iPod Nano (1st, 2, 3, 4, 5, 6), iPod Video, iPod Mini , iPod Classic. Only original iPods produced after 2007 can be connected. 2) The volume control can only be adjusted through iPod, not through speakers, headphones, car speakers and other devices. | 3.【Auto Pairing】 The automatic pairing function of this mini 30-pin transmitter is limited to automatic connection with iPod, and is not suitable for headphones, car speakers and other devices. To provide Bluetooth functionality to the iPod Classic, users can send music to Bluetooth speakers after installing a 30-pin audio transmitter. | 4.【Plug and play】No need to set up any software, easy to use. Power your device without batteries. Supported profiles: A2DP (Advanced Audio Distribution Profile) and ARVCP (Audio/Video Remote Control Profile) | 5.【Crystal Clear Stereo Audio Signal】 The 30-pin bluetooth transmitter can transmit crystal clear stereo audio signal to any bluetooth receiver device, such as bluetooth headset, bluetooth speaker or bluetooth music receiver. | 6.【Compatible devices for Speakers】The ipod classic bluetooth adapter uses bluetooth version 2.1, please make sure your bluetooth device is compatible with this adapter before purchasing,Not compatible with LG、Sonos、Move and Roam Bluetooth speakers.compatible with Bluetooth speakers such as Fugoo and Jam rewind.