LC6200 Over-ear ENC Noise Reduction Wireless Bluetooth Earphone 1. Bluetooth version: V6.0 2. Transmission range: 15 meters 3. Driver unit: 36mm 4. Frequency range: 40Hz-20KHz 5. Working frequency: 2.402-2.480GHZ, 2.4G ISM band 6. Receiving sensitivity: -90dBm 7. Battery capacity: 200mAh 8. Charging time: about 2 hours 9. Talk time: about 15-20 hours 10. Music playback time: about 15-20 hours 11. Standby time: about 300 hours 12. Suspended zero pressure, head beam and ear pads are liquid silicone, no pain after long wearing 13. Dual driver units, high-resolution stereo sound quality 14. Optimized grid design for sound amplifier, with both technological appearance and excellent acoustic performance 15. Superior sound control, reducing the embarrassment of external speakers 16. Foldable and easy to store 17. Product size: 88x186mm 18. Weight: about 185g Packing list: Bluetooth headset x1, charging cable x1, manual x1, storage bag x1