Item specifics
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Brand Name
Lenovo
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Style
In-ear
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Certification
NONE
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Vocalism Principle
Dynamic
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Origin
CN(Origin)
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Control Button
Yes
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Active Noise-Cancellation
Yes
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Communication
wireless
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Volume Control
Yes
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Sensitivity
98±3dB
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Wireless Type
bluetooth
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Is wireless
Yes
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Line Length
0m
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Function
For Internet Bar
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Plug Type
Line Type
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Impedance Range
up to 32 Ω
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Connectors
None
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Model Number
Lenovo QT81
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Bluetooth Version
5.1
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Codecs
NONE
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Driver Diameter
8mm
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Resistance
32Ω
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Waterproof
No
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With Microphone
Yes
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Features
waterproof
With Microphone
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Charging Method
Charging case

Overview: BT 5.0 technology brings high-speed data transfer speed, stable performance, and low power consumption. With TWS technology, you can use the headset solely or used them in pairs. Equipped with a 300mAh charging box to charge the earbuds. Built-in Microphone delivers a clearer and more realistic sound. It will bring you perfect user experience. Features: BT 5.0 technology ensures higher data transfer speed, stable and fast connection, and low power consumption. True wireless dual-ear design, left and right earphone channels are separated. It can be used solely or in pairs. Touch control design, no more pressure on your ears. Easy to control music and calls, and activate voice assistant. Built-in Mic on both earbuds with intelligent noise reduction delivers clearer talking sound in stereo mode. A 300mAh charging case can charge and store the earbuds. 40mAh battery in each earbud offers about 3 hours of music time. 3.8g lightweight and mini size fit well to your ear canal, providing a long time wearing comfort and stability. Specifications: Brand Name: Lenovo Model Number: XT91 BT Version: 5.0 Transmitting Distance: 10m/33ft Drive Diameter: 8mm Frequency Range: 20-20KHz Sensitivity: 90±3dB Impedance: 32Ω Charging Case Battery Capacity: 3.7V 300mAh Earbuds Battery Capacity (Each): 3.7V 40mAh Working Time: about 3 hours (depends on music volume) Color: Black, White (Optional) Earbud Weight (Each): 3.8g/0.13oz Package Size: 13.9*8.9*3.0cm/5.47*3.50*1.18in Package Weight: 80g/2.82oz Package List: 1 * Pair of Earbuds 1 * Charging Case 2 * Pair of Earcaps 1 * Charging Cable 1 * User Manual (English/Chinese) 
      
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