Item specifics
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Brand Name
Lenovo
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Style
In-ear
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Certification
CE
FCC
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Vocalism Principle
Dynamic
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Origin
CN(Origin)
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Control Button
No
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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
108dB
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Wireless Type
bluetooth
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Is wireless
Yes
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Max Output
3mW
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Line Length
0m
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Support APP
No
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Function
for Video Game
Common Headphone
For Mobile Phone
HiFi Headphone
Sport
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Number Of Drivers
2
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Plug Type
NONE
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Package List
User Manual
Charging case
Charging Cable
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Impedance Range
up to 32 Ω
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Connectors
USB
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Model Number
QT81
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Earcups Type
Semi-open
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Headphone Pads Material
Other
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Bluetooth Version
5.0
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Codecs
AAC
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Support Memory Card
No
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Driver Diameter
10mm
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Resistance
32Ω
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Waterproof
Yes
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Frequency Response Range
20 - 20000Hz
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Total Harmonic Distortion
2%
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With Microphone
Yes
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Features
waterproof
With Microphone
Active Noice Cancelling
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Charging Method
Charging case
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Magnet Type
Other
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Brand
Lenovo
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Mode
QT81
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Type
Semi-in-ear
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Color
Black/White(optional)
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BT version
V5.0
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Transmission distance
10m
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Noise reduction version
CVC8.0
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Waterproof level
IPX4
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Music time
About 30 hours
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Standby time
About 30 hours
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Battery capacity
1200mAh(charging case)
40mAh(earbud)
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Headphones type
Music Headphones
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Earphones type
Bluetooth Earphones
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Earbuds type
Sports Earbuds
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Headsets type
Wireless Headsets
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Earpieces type
Business Earpieces
Lenovo QT81 Wireless Headphones Original Bluetooth Earphones Touch Control TWS Waterproof Earbud Earpieces For Oppo Redmi Iphone Features: BT 5.0 chip has stronger processing performance, faster and more stable connection, low latency, supports binaural high-definition calls to ensure that every call is clear and smooth.
Professional three-frequency adjustment, strong and shocking low frequency, clear intermediate frequency level, loud and delicate high frequency, bringing full and stereo listening experience.
The digital display screen can display the power digital of the charging case and the power status of the left and right earbuds in real time.
Simple CD fingerprint touch operation can easily realize the operations of playing music, answering and hanging up the calls, etc.
The left and right earphones are dual-channel transmission, and the master-slave mode can be switched at will, bringing a different true wireless headphone experience.
Long endurance time, the 1200mAh charging case provides 30 hours battery life, no need to worry about power shortage. Packing list: 1 * Pair of earbuds
1 * Charging case
1 * Charging cable
1 * User manual 
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