Title:Lenovo Thinkplus TH40 bluetooth headset,HIFI-level sound quality,Bluetooth headset,Listening to the sound position | Powerful battery life.Smart chip,BT5.0,HIFI sound quality,Long battery life,ANC noise reduction,PET diaphragm.Features:Surround sound,Music/ANC dual mode switch,Fine-tuned by the acoustic laboratory, 40mm strong magnetic diaphragm unit, excellent balance of high, medium and low frequencies.40mm drive unit,Strong magnetic drive to expand the sound field,wide frequency range, creating a loud and rich sound field, excellent coordination of high, medium and low three frequencies.HD call microphone,Listening to voice identification Voice call,Brings a stronger sense of spatial orientation, allowing you to easily identify the enemy's orientation in the game.Call/voice/call,Professional HD resolution audio,Enhance the environmental hearing effect, and restore the sound effect excellently.Lenovo Custom 5.0 BT,BT/wired switch freely,Upgrade the Bluetooth 5.0 chip, two connection methods, AUX and Bluetooth connection signals are strengthened, the transmission stability is improved, the transmission speed is faster, the game is not stuck, and the connection is continuous.Fully compatible devices,Do not choose the model Bluetooth connection,3D angle folding for easy storage,Convenient storage and space saving,Strong battery life all day,Bluetooth/AUX audio playback.Specification:Product Type: Headset Bluetooth HeadsetBluetooth version: Bluetooth 5.0Sensitivity: -115dBBluetooth transmission distance: 10 metersImpedance: 32Drive unit: diameter 40mmPlug diameter: 3.5mmCharging interface: Type-CBattery capacity: 400mAhCompatible platforms: AAC/SBCNote:There is a little of difference according to manual measurement.The actual use may be slightly different depending on the specific situation.The product warranty is only for customers in China, foreign customers cannot be guaranteed.