1) Driver unit:40mm neodymium driver unit

2) Frequency Response：10Hz—21000Hz

3) Impedance:30Ω(when on) 36Ω(when off)

4) Sensitivity：113dB /mW(when on) 114dB /mW(when off)

5) Max input power:50 hours(using alkaline batteries)

6) Length of the cable:1.5m

7) Plug:3.5mm

8) Attachment: Receive bag*1 Double joint adapter*1

9) Logo: Customized

10) Color: Customized

11) Style: Customized