Description: Bluetooth Standard: Bluetooth 3.0+EDR, supports A2DP V1.2 Power Supply: 5V USB Output: 3.5mm audio jack Range: approx. 10m Audio Output Rate: 44.1kHz and 48kHz. Usage: Step One: For speakers with a USB port: Connect the device directly to the speaker's USB port, then connect the speaker's AUX port using the included cable. For speakers without a USB port: Connect the device to a 5V USB power source, then connect the speaker's AUX port using the included cable. Step Two: Turn on Bluetooth on your computer, mobile phone, or other Bluetooth-enabled device. Search for the H-163 device to pair and enter: 0000 for pairing when the device is in pairing mode. Once pairing is complete, the indicator light will flash slowly. You can now use it with iPhones and other Bluetooth transmitters to play music. Package Includes: 1 x USB Bluetooth Music Receiver (speaker not included, for reference only) 1 x 3.5mm audio cable Note: The store only sells the product and does not offer technical support. With basic electronics knowledge, you can buy with confidence.