The EDUP EP-B3502 is a Bluetooth wireless music receiver that connects to any stereo audio input. Now you can listen to music from your phone, laptop or iPod without the hassle of cables. The EDUP EP-B3502 can connect to home A/V systems, home stereos, headphone, automobile or motorcycle speakers, Boats, RVs and more. * Touch and hold one button to power on the EDUP EP-B3502 and it will automatically search for a compatible transmitter; No any codes to enter if connect with Apple or Android device, to complete paring some devices require a pass key or code, use "0000". LED lights beneath the button indicate device connection and charging status. * The included stereo cables and adapter connect the EDUP EP-B3502 to any receiving device with a headphone jack. The fully charged EDUP EP-B3502 provides up to 8 hours of music reception or use continuous with USB power . * Size: 5cm x 2.2cm x 1.2cm - 1.97inch x 0.87inch x 0.48inch.