Note:
Brand new
The outer packing box was damaged due to transportation and storage,but the item is working.please understand.
 
Features:
  • 40mm titanium diaphragm unit
  • High-resolution standard
  • Pull-out integral steel headband
  • Comfortable Earmuffs,Ergonomic design
  • Retractable hidden microphone,omnidirectional recording sound, Adjustable length and direction
 
Specs:
Sensitivity:101db
Frequency response: 20hz-20khz
Impedance: 24Ω
Driver unit: Φ40mm dynamic drivers 
Cable length:1.3 meters 
Plug:3.5mm,L-shape plug
 
Include:
GM660 headphone*1