1.Item Name: Lenovo XT81
2.Bluetooth-compatible version: 5.1
3.Unit: 13mm moving coil
4.Sound quality: HIFI
5.Charging time: 1.5-2 hours
6.Playing time: 3-4 hours
7.Charging interface: TYPE C
8.Communication: wireless
9.Support Memory Card: No
10.Total Harmonic Distortion: 0.01%
11.With Microphone: Yes
12.Charging Method: Charging case