1.Brand Name: Lenovo X18
2.Model Number: BT Version: 5.0
3.Transmitting Distance: 10m/33ft
4.Driver Diameter: 6mm
5.Frequency Range: 20-20KHz
6.Sensitivity: 91±3dB
7.Impedance: 32Ω
8.Charging Case Battery Capacity: 3.7V 300mAh
9.Earbuds Battery Capacity (Each): 3.7V 40mAh
10.Music Play Time: about 4 hours (depends on music volume)
11.Charging Time: about 1.5 hours
12.Color: Black, White (Optional)
13.Earbud Weight (Each): 3.4g/0.12oz
14.Package Size: 14.0*9.0*3.6cm/5.51*3.54*1.41in
15.Package Weight: 80g/2.82oz