1. Blutooth standard: Blutooth V3.0+EDR， Class 2:33'2. Transmission distance: 10m3. Hands-free4. Stereo audio profile: A2DP5. Frequency: 2.4GHz6. Certified BQB， CE AND FCC7. 3.5mm stereo audio output8. Sleep mode for power conversation9. Power supply: Chargers via mini-USB cable10. Operation time: up to 8 hoursPackage include1 x Bluetooth Receiver1x USB Cable1x Instruction Manual