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 3-4 seconds). 2. Open the Bluetooth headset, must be ready to pair. 3. The transmitter will auto-connect 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: H-366T 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 lighter 2. Multi-point design, one transmitter could connect with two Bluetooth devices at the same time, eg. one BT speaker and BT headsets. 3. High-quality stereo transmission makes sure you can enjoy the auditory feast. Specifications: Product Name: Multi-point Bluetooth Transmitter Model: H-366T Bluetooth version:4.0 Valid distance: less than 10 meters Battery duration:5 hours Charging period:1.5 hours Product size: 45mm*11mm Color: Black Weight: 15g Package includes: 1 * Bluetooth Transmitter 1 * Charging cable 1 * 3.5mm audio cable 1 * User Manual