Effective Noise Cancelling technology without Batteries, Electronics, valves,
or any moving parts!
Unique patented sound chamber technology, directs damaging sounds away from the ear canal, where they are dampened, refracted and cancelled.
The effect is amazingly clear low level sounds such as speech, but with highly efficient protection from damaging noise levels such as gunfire with over 32 Decibels of noise reduction, evenly across all frequencies.
Just a basic/sample information about the Delivery & Returns.