Lenovo XT92 True Wireless Gaming Earphone, Touch Control, Sport Headset with Mic Earbuds- Genuine

BT Version: 5.1

Transmitting Distance: up to 10m (no obstacle)

Frequency : 20-20KHz

Mic Sensitivity: 42dB

Impedance: 32Ω

Charging Case Battery Capacity: 3.7V 300mAh

Earbuds Battery Capacity (Each): 3.7V 30mAh

Music Play Time: about 4 hours (depends on music )

Charging Time: about 1 hour (Earbuds), about 2 hours (Charging Box)