▶ Turn your No-Bluetooth common sound-box into Bluetooth sound-box | ▶ Turn your iPhone,iPod,iPad speaker dock with Apple 30-pin connector into a wireless Bluetooth music system and freely enjoy your favorite songs(IF IT ASKS FOR A PASSWORD ENTER '0000') | ▶ Support A2DPV1.2,compatible with all A2DP stereo Bluetooth enabled devices.Also can pair to your Bluetooth transmitter adapter,no any other messy lines everywhere | ▶ Plug and play;Simple operation;Freely and wireless enjoy music;Working distance is no less than 10 meters(30 feet);No battery in the product,power supply by the 30pin dock speaker | ▶ Note:not every 30-pin dock speaker can work with,check the Compatible Speaker list in Product Description in case you can use it.For Bose SoundDock, Only compatible with newer generation sounddock series I (that will charge iPhone), series II,10 & Portable. NOT compatible with older generation Sounddock I that cannot provide charge to iPhone iPod. So pls check your Sounddock before order! Make sure your speaker Can charge the receiver by 30-pin dock!

Eliminating Buzzing Noise : Eliminating the buzzing noise, caused by ground loops which happens when the audio source and the speaker use the same power source in some car speakers / home stereo systems when using the Bluetooth receiver. | Working Principle: Filters out noise instantly for clear, uninterrupted, uncompromised sound by eliminating the current noise in some car speakers / home stereo systems | Plug and Play: Nifty little gadget that just plugs in; no other setup needed. | Wide Compatibility: Works with any audio device that has 3.5mm audio jacks, for your Car Audio System/Home Stereo. | Note: The Ground Loop Isolator connect to the AUX Jack in car to eliminate noise.You will enjoy good quality sound when use it with Ground Loop Noise isolator.