Because some clients misunderstand, here we have some explanation, This is a Bluetooth Audio transmitter (not Bluetooth music receiver ), it is not used to connect cellphones, this transmitter is used to connect the Bluetooth headset or Bluetooth speaker, how to use it? 1. Use AUX Cable to connect the transmitter and TV or DVD or another device, then open the transmitter (press the button for about 34 seconds).2. Open the Bluetooth headset, must be ready to pair. 3. The transmitter will autoconnect your Bluetooth headset or Bluetooth speaker, then the TV or DVD sound will into your Bluetooth headset or Bluetooth speaker, done! If you need to order Bluetooth Music Receiver for a car or for normal speaker(nonbluetooth function), please click this button: Bluetooth Music Receiver Introduction:H366T is designed to transmit the audio signal of TV, DVD, MP3, etc to Bluetooth earphones or speakers by Bluetooth wireless technology. To help customers to realize higher quality wireless household lives, and easy operation, connect the product with audio players by an audio cable, without setting up after the device turn on. Features:1. Exquisite round design with the perfect process, mini body, smaller and lighter2. Multipoint design, one transmitter could connect with two Bluetooth devices at the same time, eg. one BT speaker and BT headsets.3. Highquality stereo transmission makes sure you can enjoy the auditory feast.Specifications:Product Name: Multipoint Bluetooth TransmitterModel: H366TBluetooth version:4.0Valid distance: less than 10 metersBattery duration:5 hoursCharging period:1.5 hoursProduct size: 45mm*11mm Color: BlackWeight: 15gPackage includes:1 * Bluetooth Transmitter1 * Charging cable1 * 3.5mm audio cable1 * User Manual