Specification:• Size: 84*63*21 mm• Net Weight: 121g• Material: ABS• Bluetooth Version: 3.0• Bluetooth Distance: ≤10 m• Working Current: 20 mA• Charging Voltage: DC 5V• Support multiple audio outputports: can connect with 3.5 mmheadset， stereo system， speaker• Support USB 5V DC output， also can charge foriPad， foriPhone Product Features:• Bluetooth V3.0， NFC function， make your audio entertainment(without Bluetooth) connect with any Bluetooth smartphone• Better sound without wires :After connected with smartphone， tablet... you can listen the music， video，games through your good speakers /sound system• Keeps your mobile devices mobile: Without having to dock your mobile device or wire it to your sound system• Hands free : Built-in Microphone， you can answer your phone by this receiver• Built-in USB charging port ，you can charge your smart device by this receiver.