Lenovo QT81 True Wireless Headphones BT 5.0 Half In-ear Touch Control Music Earphone with Mic USB Output

Overview:
BT 5.0 technology brings high data transfer speed, stable performance, and low power consumption. With true wireless stereo technology, left and right earphone channels are separated. You can use the earbuds solely or in pairs. Auto fast pairing between left and right earbuds when taking out of the charging box. Easy and quick to pair with BT-enabled audio devices. Equipped with a 1200mAh charging box to charge the earbuds. Built-in Microphone delivers clearer and more real talking sound. It will bring you a perfect user experience.

Features:
True Wireless Stereo BT5.0:
Wireless dual ear design, you can use the earbuds solely or in pairs. BT 5.0 enables high data transfer speed, stable connection, and low power consumption.
Fast & Easy Paring:
Auto power on and fast pairing between left and right earbuds once taking out from the charging case. Easy and quick to pair with BT-enabled audio devices.
Long Battery Life:
40mAh battery in each earbud offers about 4 hours of music playing time. The earbuds can be charged automatically in the 1200mAh charging box.
Hands-free with Dual Mic:
Built-in dual Mic delivers clearer and more real talking sound in stereo mode. BT5.0 chip enables to grasp the detail of voice greatly.
Battery Digital Display:
LED battery digital display can clearly show the battery allowance of the earbuds and charging box. Charging box can work as a mobile power source to charge mobile devices.
Smart Touch Control:
Touch control design, no more pressure on your ears. Easy to control music, volume and call, and activate voice assistant.

Specifications:
Brand Name: Lenovo
Model Number: QT81
BT Version: BT 5.0
Transmitting Distance: 10m/33ft (no obstacle)
Drive Unit: 13mm
Frequency Range: 20-20KHz
Sensitivity: 100±3dB
Impedance: 32Ω
Charging Box Capacity: 3.7V 1200mAh
Earphone Battery Capacity: 2 * 3.7V 40mAh
Music Play Time: about 4 hours (depends on music volume)
Waterproof: IPX4
Color: Black, White (Optional)
Earbud Size: approx. 3.5*2.6*2.0cm/1.37*1.02*0.78in
Earbud Weight (Each): 4g/0.14oz
Charging Case Size: approx. 8.2*5.3*3.2cm/3.22*2.08*1.26in
Charging Case Weight: 73g/2.57oz
Package Size: 13.5*10.5*3.5cm/5.31*4.13*1.37in
Package Weight: 130g/4.58oz

Package List:
1 * Pair of Earbuds
1 * Charging Box
1 * Type-C Charging Cable
1 * User Manual (English)