Lenovo XT88 BT5.3 Earbuds

Specifications:
Brand Name: Lenovo
Model Number: XT88
BT Version: 5.3
Transmitting Distance: up to 10m (no obstacle)
Drive Diameter: 10mm
Frequency Range: 20-20KHz
Mic Sensitivity: -40dB±3dB
Impedance: 32Ω
Charging Case Battery Capacity: 3.7V 250mAh
Earbuds Battery Capacity (Each): 3.7V 35mAh
Music Play Time: about 4 hours (depends on music volume)
Charging Time: about 1.5 hours
Color: Black, White (Optional)