ITEM NAME:Mini Wireless Receiver Adapter 3.5Mm Music Audio Mp3 Player Hands Free Talk Q9F3 Mini Wireless Receiver Adapter 3.5Mm Music Audio Mp3 Player Hands Free Talk Q9F3 Steps:turn on: long press " 2 seconds, the Bluetooth device will automatically turn on, red light for 1 second after the blue light slow flash;Turn off: long press "shutdown key" button for 3 seconds, red light for 1 second after the Bluetooth device automatically turn off; Usage Notes:1. Connect the 3.5m audio head to the home power amplifier / car audio / stereo headphones;2. Bluetooth device with your phone to match the connection;3. After the success of the connection can be through the amplifier / car audio / stereo headphones to enjoy the phone music and hands-free calls; Transmission power:CLASS2 Frequency Range:2.4GHz-2.480GHz External interface: 3.5 audio male plug, MKUSB public plug Audio Crossover:Full-Range Communication:Bluetooth Speaker Type:Portable Channels:1 Battery:Yes Number of Loudspeaker Enclosure:1 Model Number:BT12B Frequency Range:60Hz-23KHz Communication:Wireless Bluetooth specifications:Bluetooth V4.1 Support for Bluetooth protocol:HFP HSP A2DP AVRCP Receive connection:Two Operating Voltage:DC3.0-4.2 V Working current:Less than 15mA Built-in lithium battery:110mAH Wireless transmission range:Less than equal 10 meters Pair connection phone: 1.For the first time,the equipment must be paired with the phone; 2.Shut down the state,long press the"power"button for about 5 seconds until the red and blue lights flashing alternately,the device automatically enter the pairing mode; 3.Open the phone Bluetooth function,search the Bluetooth device name"LinK-BT12"selected and connected; 4.If necessary,enter the"0000"password; 5.After the success of the blue light will be intermittent flashing; Connect two phones: 1.Pair the first phone first; 2.After the connection is successful,turn off the Bluetooth function of t