USER STEPS:1. Switch on.2. Search for ''HQX6'',pair with your phone/plug TF card into TF card slot.3. Connect aux cable with speaker and the device/plug headphone into 3.5m audio slot.4. Enjoy wirele music and hands-free driving. 1 * Bluetooth music receiver1 * USB cable1 * 3.5mm audio cable1 * User manual 1.100% Brand new and high-quality2.Bluetooth Hands-free: Support Bluetooth hands-free Answer/Hang up/Reject/Redial, safer driving3.Audio Receiver: Transmit music from phone, TF card (Micro SD Card) to Car, speaker, earphone, very powerful4.Embedded echo cancellation microphone, pure sound output5.Automatic connection to the last matching device, convenient to pair6.Long transmiion distance, 10m barrier-free effective distance7.Long working time, up to 8 hours8.USB cable for power supply, easy to charge9.Support TF card playback function, easy to operate Type Bluetooth Audio Receiver Material Plastic Quantity 1set Color Black Bluetooth Version V4.0+EDR Supported protocol A2DP, CE, FCC, BQB Certification Valid Distance 10m effective distance Compatibility All mobile phone with Bluetooth, TF card Power The mini USB cable Working Hours 8 Hours Frequency 2.4GHz Item Size 5.5*2.5*1.3cm / 2.17*0.98*0.5'' Net Weight 0.031kg /1.1oz