SC_Dave
Member
I noticed it says on Surefire's website these should be replaced every six months. Why is this so?
For those that have used them, would you recommend them?
David
For those that have used them, would you recommend them?
David
Why is this so?
For those that have used them, would you recommend them?
Great under electronic muffs.
http://www.surefire.com/ep4-sonic-defenders-plus.htmlEP4 Sonic Defenders® Plus protect your hearing without interfering with your ability to hear routine sounds or conversations. Their triple-flanged stem design fits larger ear canals and provides a Noise Reduction Rating (NRR) of 24dB. Sounds, at safe levels, are allowed to pass through into the ear canal, while potentially harmful noises (above 85dB) are reduced via a proprietary design that incorporates a special noise-reducing filter. EP4s include attached filter caps, which can be inserted for additional protection and blocking out lower-level noise, like that heard on a plane, where hearing ambient sounds or conversations isn't critical.
•24dB Noise Reduction Rating (NRR) with filter caps inserted•Lowers potentially dangerous noise levels above 85dB
•Hear safe sound levels (with filter caps out) as if you weren't wearing ear plugs