Lenovo XT81 BT5.3 Noise-cancelling Headphones Bluetooth

Overview:
BT 5.3 technology brings high-speed data transfer speed, stable performance, and low consumption. With true wireless stereo technology, you can use the headset solely or used them in pairs. Equipped with a 250mAh box to store and charge the Headphone. Built-in Microphone delivers a clearer and more realistic sound. It will bring you a perfect user experience.
Features:
The latest BT 5.3 technology enables stable connection, transmission speed and low consumption.
Auto on and pairing between left and right Headphone once taking out of the case, quick to pair with BT-enabled audio devices.
True wireless stereo dual-ear design, left and right earphone channels are separated. It can be used solely or in pairs.
Long touch the right Headphone for 2s to switch between game mode and music mode. Low latency delay, play games freely.
Ergonomic and 3.5g lightweight design ensures wearing comfort and stability, suitable for hiking, running, cycling, climbing, driving, etc.
Touch control design, no more pressure on your ears. Easy to control music and calls, and activate voice assistant (only for iOS).
A 250mAh case can charge and store the Headphone. 30mAh battery in each Headphone offers about 4 hours of music time.
Built-in Mic on both Headphone with built-in call noise reduction algorithm delivers clear talking sound in stereo mode.
Specifications:
Brand Name: Lenovo
Model Number: XT81
BT Version: 5.3
Transmitting Distance: up to 10m (no obstacle)
Drive Diameter: 13mm
Frequency Range: 20-20KHz
Mic Sensitivity: -40dB±3dB
Impedance: 32?
Case Battery Capacity: 3.7V 250mAh
Headphone Battery Capacity (Each): 3.7V 30mAh
Music Play Time: about 4 hours (depends on music volume)
Headphone Time: about 1 hour
Box Time: about 1.5 hours
Color: Gray, Blue (Optional)
Headphone Size (Each): 3.0*1.9*1.7cm/1.18*0.74*0.67in
Headphone Weight (Each): 3.5g/0.12oz
Box Size: 5.3*5.1*2.3cm/2.08*2.00*0.90in
Box Weight: 39g/1.37oz
Package Size: 13.7*9.0*3.0cm/5.39*3.54*1.18in
Package Weight: 83g/2.92oz
Package List:
1 * Pair of Headphone
1 * Case
1 * Cable
1 * User Manual (English/Chinese)