Quantity: 2 Pcs Make your car AUX audio system and home theater AV HiFi Surrounding system become compatible with bluetooth, get music from Bluetooth enable device like for iPhone, For iPad, For iPod, For HTC For Samsung Smartphone or Bluetooth PC, Laptop. Just plug this Bluetooth audio receiver into your input or auxiliary input on your speakers, pair it with your Bluetooth enabled device and enjoy the wireless music revolution. Whether you want Bluetooth convenience in your car, through your home theater system, in your kitchen, bathroom or bedroom etc. Easy operation, 3.5mm Male to Male Audio Connector or 3.5mm Male to Male Audio Cable to connect the speakers and receiver. High performance AMP chip, can push the headset and speakers, applicable to all kinds of speakers Powerful bluetooth IC, More stronger compatibility Powered by built-in rechargeable li-ion battery via mini USB port, long working time and low consumption. (Mini USB cable included) You can play music through your car stereo and answer phone calls via the built-in microphone. First time charging it takes 100% Specifications: Dimensions: 52mm (L) x 21mm (W) x 11mm (D) Bluetooth v3 + EDR, Class 2 Support A2DP V1.2 (built-in Mic) Powered by USB 5V DC Transfer rate: 3 (Mbps) Built-in microphone Transmission distance of up to 10M Support A2DP stereo 3.5mm stereo input jack Battery life: about 7 hours Charging time: 2 hours Support Bluetooth hands-free function Wireless music receiver connects to 3.5mm headphone jack Used with stereos/speakers, car stereos, headphones, etc. How to use: 1.Power on/off Turn on: Press and hold the ON/OFF button for 5-7 seconds until you hear "ready to connect or sound", it will automatically connect the phone that was paired. Power off: Press and hold the ON/OFF button for 4-5 seconds until you hear a "Long be or red led". 2. Connect the receiver to your speakers With 3.5mm male to manual audio plug or 3.5mm male to manual audio cable to connect the speakers and receiver (if no sound, please make sure it was fully inserted). 3.Pairing (1) Make sure the speakerphone is in OFF mode (2) Pairing: Press and hold the ON/OFF button for 7 seconds until you hear "Ready to connect or sound" (when you keep pressing the button until you hear the voice report "Ready to connect"). The LED indicator flashes between red and blue alternately. It is now ready for pairing. (3) Activate the Bluetooth function of the mobile phone and search for available Bluetooth devices by referring to the user manual of your mobile phone for details. (4) Select Bluetooth from the list. (5) When the pairing is completed, the voice report "connected or short bebe" LED indicator will flash blue alternately. Compatible with: For iPhone 3G, 3GS, 4, 4S, 5, 5c and 5s, 6, 6 Plus For iPad 1, 2, 3, 4, Air, Mini1 and 2 For laptop and computer with Bluetooth 2.1 and above For Samsung, for HTC, etc, all other Android 2.1 (and above) devices with Bluetooth Smartphone with Bluetooth 2.1 and above Package includes: 1 X Bluetooth Receiver 1 x Charging Cable 1 x 3.5mm Stereo Jack