Specifications:Color : BlackAudio Interface: 3.5mm/0.14inDistance : appro 12-15 mBluetooth 1.2 specification compliantRobust performance， accurate and sensible search of device in rangeSingle button for easy controlPlug and playPassward:0000Version:Bluetooth 3.0Supported Profile: A2DP， AVRCPPower supply: 5V DC， 100~240V AC adapterCharging Time: 2 hoursListen time: Up to 6-8 hoursStandby time: Up to 70 hoursFor:iphone，Samsung，ipad，HiFi ipod，TV.How to use:Add Bluetooth functions to your devices --- Plug the Bluetooth audio adapter into any devices with 3.5mm audio port， such as iphone，Samsung，HTC，ipad，hifi ipod，TV etc.Power On/Off and Pairing:Power On --- Press and hold the bluetooth button for 3 seconds until the blue LED flash quickly for 3 times.Power Off --- Press and hold the bluetooth button for 3 seconds until the red LED flash quickly for 3 times.Pairing --- While the bluetooth audio adapter is power off， press and hold the button for 6 second until the red and blue LEDS flash alternatives.The Bluetooth audio adapter will now be in Paring mode.Connection:Start scanning to find the device with Bluetooth audio adapter.Select the Bluetooth audio adapter from the list and enter the pass code "0000"You can enjoy the wireless moment Now!Important Notice:This device is a Bluetooth music receiver. Streaming Music from your audio devices. Not use for answering phones.This is a Bluetooth music receiver， not a Bluetooth transmitter. It can add Bluetooth transmitting function to your electronic devices， and help to transmit audio to your Bluetooth headphones;Pair to Non-Bluetooth audio source in order to add Bluetooth ability. You must connect it to a Bluetooth Stereo headset.Control lay/pause forwards and backwards on the original device， not the headset.NOTE:This is not a Bluetooth transmitter could only use a Bluetooth Stereo Headset as a receiver.Package included:1 x Universal 3.5mm Bluetooth Stereo Audio Dongle Adapter Reciever1 x USB Cable