Features:Lightweight soft on-ear cushioned headphones are perfect in any setting. They keep the noise out and the music in.Unit£º¦µ40mm (1.57in)Frequency: 20-20KHZsensitivity: 108dB ¡À 2dBresistance£º32¦¸¡À15%plug: USBmaximum input power : 100mW package included:1 pcs earphone