OEM Headset Wholesale Noise Cancelling With Mic Wired 3.5 mm USB Official Headphone For Call Center

• Speaker diameter:Ф30mm
• Speaker Impedance:32Ω
• Speaker Frequency response: 20Hz - 20KHz
• Speaker Sensitivity:110dB
• Headphones Wire Length:1.5M
• Plug: 3.5mm
• Ideal for Travel -- Airlines, Buses , trains
• Education --Schools , training, Net bars
• Medical field -- hospitals , clinics, dental
• Conference -- Congress , media session
• Your logo & custom package are welcome