기능

• It has a special patented filter that absorbs noise at both high and low frequencies.
• You can hear the conversation well.
• Since it drains moisture through the filter, you can use it comfortably even if you wear it for a long time.
• It comes with a metal case with a key ring for easy carrying.
• Two sets of M and L sizes (only one set of filters).
• Can be washed and used many times.
• In a noise environment up to 150dB.
• Military related.
• When using power tools such as forging and nailing machines.
• When opened, only one set of filters is set on the L size side.