Volume Control : Yes

Active Noise-Cancellation : Yes

Certification : CE

Communication : Wireless

Style : In-ear

Brand Name : Lenovo

Number Of Drivers : 2

Control Button : No

Vocalism Principle : Dynamic

Frequency Response Range : 0 - 20000Hz

Headphone Pads Material : Silicone

Magnet Type : Ferrite

Waterproof : Yes

Plug Type : L Bending

Origin : Mainland China

Wireless Type : bluetooth

Support Memory Card : No

Impedance Range : from 33 to 100 Ω

Model Number : Lenovo T40

Line Length : 0m

Package List : User Manual,Charging Cable,Charging case

Codecs : Apt-X,AAC,sbc,Apt-X HD,LDAC

Driver Diameter : 10mm

Resistance : 32Ω

Sensitivity : 125dB

Is wireless : Yes

Connectors : Type c

Earcups Type : Sealed

Bluetooth Version : Other

Total Harmonic Distortion : 0%

Charging Method : Charging case

Max Output : 400mW

Support APP : Yes

Function : For Internet Bar,Monitor Headphone,Common Headphone,for Video Game,For Mobile Phone,HiFi Headphone,Kids' Headphones,Sport,For Hearing Aid

With Microphone : Yes

Features : waterproof,With Microphone,Amazon Alexa Support,Apple Siri Support,Detachable Cable,Dual Connection,Google Assistant Support,Active Noice Cancelling,Playback Control

Battery compartment capacity : 380mAh

Charging time : about 1.5h

Call life : about 4h,about 4h

Headphone battery capacity : 30mAh