Fineblue J1 Pro Bluetooth 5.0 TWS Wireless Bluetooth Earphone(Black)

1. Connection: Bluetooth 5.0, effective distance within 10m 2. Speaker size: 14x 2.0mm, full range 3D stereo cavity, high strength NdFeB magnet 3. Headphone: 17x40x19mm 4. Charging case: 52x45x27mm 5. Material: ABS + Alloy oxidation blasting + PC 6. Function: TWS automatic pairing, automatic connection, stereo surround sound field, heavy bass Light sensor in-ear detection, Air true wireless master-slave switch, Ai voice control with one touch, adjustable volume, can cut songs 7. Electricity: Earphone: Lithium polymer battery (400909 / about 30MAH) 8. Listening time: about 3 hours 9. Talk time: about 3.5 hours 10. With the charging case, you can increase the charge of both ears 3-4 times 11. Charging time: about 1.5 hours 12. Standby time: about 60 hours