Parameters:
1. Bluetooth version: JL 5.3
2. Support agreement: A2DP, AVCT, AVDTP, AVRCP, HFP, SPP, SMP, ATT, GAP, GATT, RFCOMM, SDP, L2CAP
3. Operating distance :10 meters
4. Frequency range: 2.402-2.480 GHz
5. Trumpet size :40mm
6. Impedance :32Ω
7. Frequency response :20Hz-20KHz
8. ANC amplitude :27+/-3dB
9. Frequency range :100-1000Hz
10. Rechargeable lithium battery :200mAh
11. Music time :3-4 hours
12. Charging time :1.5h
13. Support TF card, mp3