The item pictured is a pair of Alctron HP1200 Professional Studio Headphones.
Specifications
Type: Closed-back design
Driver: 50mm true monitor drivers
Impedance:
32 Ω±15%32 space cap omega plus or minus 15 %
3
2
Ω
±
1
5
%
at 1KHz
Frequency Response: 20Hz to 20KHz
SPL (Sound Pressure Level):
115dB±3dB115 dB plus or minus 3 dB
1
1
5
d
B
±
3
d
B
at 1KHz
Max Input Power: 300MW
Cord Length: Approximately 4m
Plug: 3.5mm (includes a converter)