Product name: WH-1000XM4
How to wear: head-mounted
Acoustic construction: Enclosed
Drive unit: 40 mm neodymium
Wired connection: 3.5mm cable
Bluetooth connection: Bluetooth 5.4
Bluetooth programming: apt-X/apt-X HD/AAC/SBC
Charging cable: USB-C charging cable
Sattery Type: Lithium polymer battery
Headset frequency range: 20Hz-40KHz(wired)
Depth of noise reduction: 18-23db