ASK AN EXPERTDescription
- Provides a 24-dB Noise Reduction Rating (NRR) with filter caps inserted
- Lowers potentially dangerous noise levels above 85 dB
- Patented EarLock retention rings utilize seven contact points to lock earpieces in place and fit the same way every time
- Soft, double-flanged stems provide secure seals and all-day comfort
- Made from hypoallergenic, medical-grade polymer that's soft, durable, and long-lasting
- Low-profile design for superior comfort when worn with a mask, helmet or hat, or while using a phone, headphones or supplemental hearing muffs
- Serve as earpieces for compatible radio communication systems
- Each set is packaged in a convenient carry case and includes a polymer lanyard
SUREFIRE EP4 Sonic Defender Plus will protect your hearing against Noise-Induced Hearing Loss (NIHL) without compromising your ability to hear routine sounds or conversations in noisy environments. Their triple-flanged-stem provides a Noise Reduction Rating (NRR) of 24 dB. Safe sound levels are allowed to pass through into the ear canal, while potentially harmful noises (above 85 dB) are reduced via our proprietary noise-reducing filter. EP4s include attached filter caps that can be inserted for additional protection, blocking out lower-level noise, like that heard on an airplane, where hearing ambient sounds or conversations isn't critical. Sonic Defenders are made from a soft, durable, hypoallergenic polymer that provides all-day comfort and extends product life (up to 6+ months, depending on usage and care).
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Warranty Information
| Noise Reduction Rating | 24 dB (with filter caps inserted) |
| Filter | Yes |
| Stem | Triple Flanged |
| Radio Comm Compatible | Yes |
