About this item ANC & ENC Noise Cancelling Technology: These noise cancelling earbuds feature advanced ANC noise canceling technology, which uses a microphone to pick up external noise and generate reverse waves to cancel it out. This feature effectively reduces ambient noise and provides an immersive listening experience. In addition, thanks to the ENC chip, the bluetooth earbuds can filter out background noise during calls, providing clearer and crisper calls. HiFi Stereo Sound & 5 EQ modes: These wireless headphones adopt a 13mm graphene driver and a triple-layer composite membrane, providing powerful bass (up to 50Hz), impressive treble (up to 5 kHz), and mid-range. Additionally, these bluetooth earphones offer five adjustable equalization modes (Standard, Classic, Jazz, Rock, Pop), allowing you to adjust the sound according to different music styles and find the best sound for you. More Practical Functions: The bluetooth headphones charging box provides various functions beyond ju