Product compatibility: 1.The iPod transmitter provided by YOVDA is not compatible with iPods manufactured prior to 2007. 2.Not compatible with iPod Touch 2nd generation and iPod Touch 1st generation, iPod Nano 6, iPod Mini (4GB), iPod Touch 2nd generation, iPad Touch 1st generation and iPod Classic (30GB).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. 3.The automatic pairing function does not support mutual connection with car speakers. Some devices may fail to automatically connect because Bluetooth is already connected to other devices (including mobile phones, tablets, etc.). 4.Due to compatibility issues, the volume of speakers, stereos, and car speakers cannot be controlled, and the volume can only be controlled through the iPod. Please note that some customized iPods may not be able to control volume either. 5.Not compatible with LG、Sonos、Move and Roam Bluetooth speakerspatible with Bluetooth speakers such as Fugoo and Jam rewind How to use? 1. When you start pairing your ipod with speakers, etc., headphones, etc.' devices, make sure that these devices are not already paired with other devices (e.g., cell phones, iPads) when you turn them on. 2. Then plug the adapter into the 30-pin connector on your iPod and pair it with a Bluetooth device, such as a Bluetooth headset or Bluetooth speaker or Bluetooth for cars. 3. It is powered by your old iPod and will drain the iPod battery faster. If your ipod runs out of power, the transmitter will automatically stop working. Product Parameters： Frequency range: 2.42-2.480GHz No batteries required, powered by your device. Range: up to 10m/33ft Bluetooth version：2.1/5.0 Operating current: 40MA max Package include： 1x Host 1x Box