1.Wireless Version: 5.0 2.Support Profiles: A2DP,AVCTP,AVDTP,AVRCP, HFP,SPP,SMP,ATT,GAP,GATT,RFCOMM, SDP,L2CAP 3. Operation Distance: 10m 4. Transmitting Power: Class 2 5. Frequency Range: 2.402 -2.480 GHz 6. Speaker: Ø40mm 7. Impedance: 32Ω 8. TF card Supported: 128M-32G 9. Radio Frequency Response: 87.5-108MHz 10. Rechargeable Lithium Battery: 400mAh 11. Music Playing Time: 7h 12. Talking Time: 7h 13. Charging Time: 2.5h