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They are compatible with the following radio comm systems: Thales Covert Security Harness; Harris Security Force Communication Set; Motorola Surveillance Kits; Tactical Command Industries Tactical Earpiece Products; Peltor Lightweight Systems-Hearplug; Silynx C4Ops Headset
Durability will depend on how well you take care of them, if properly cared for, they will last a long time.
I agree they should last a long time if cared for properly, but their instructions (downloaded from this listing) say:
- For optimal performance, the Comply Canal Tips used on EP7s should be replaced every 2 - 4 weeks or when soiled. Additional tips can be purchased directly from SureFire.
- EP7 Sonic Defenders Ultra typically last up to 6+ months, depending on usage and care.
* This might be a legal CYA on their part??