Heavy duty high quality Noise cancelling headset

Electrical Specifications for Headphone section
Sensitivity:42±3dB/U=2V; R=2.2KΩ. 1KHz
Input Signal U=2V; R=2.2KΩwith
Electric Sound Device
Analyzer, Model-CRY6135
Storage/Low Temperature Test:

3 Push-to-talk Buttons with VOX function
Rough durable PC housing
Adjustable call volume according to your demand.
Volume knob (1PTT volume knob).
It equips with a 3.5mm mono headphone jack under the helmet PTT.
3 Push-to-talk Buttons (1 big PTT, 1 small finger PTT and 1 helmet PTT).
The mic is VOX ready. It can work in VOX mode with radios which has built-in VOX function. If your radio does not have built-in VOX function, it can still work in PTT mode.
2 large soundproofing earpieces close to your ears, which is not sensitive to the background noise. This is ideal for usage in high ambient environment such as driving, riding motorcycles and bicycles.
High-quality material and function,

It is popular application in the manufacturing engineers, technicians processing industry, construction teams, airport staff, racing teams working in noisy environments
1.The tested units shall to be kept for 24 hours in the environmental
chamber which to the temperature conditions of –40 degree C.
2.The tested units shall be measure for performance by Electric Sound
Device Analyzer tester after leaving the chamber at normal
temperature for 2 hours.
3.The response S.P.L. shall not deviate more than ±3dB from the
initial value