- Constant protection from noise
- Everything will sound quieter
- Defense against impulse noise
- NRR 21
Choose Closed Mode for situations in which you need protection or relief from constant background noises, in addition to protection against blast noise. For tasks such as extended shooting, firing at an indoor range, or personal use of power tools, or yard work, this constant passive protection is a familiar and effective defense from any hazardous noise.
Open Mode- Hear safe ambient sound clearly
- Maintain situational awareness
- Defense against impulse noise
- NRR 8
Choose Open Mode for situations in which you need to be able to hear ambient noises such as voices, announcements, or prey sound. In this mode, Combat Arms allows you to hear clearly with little interference, preserving your situational awareness. But when a hazardous blast noise occurs, the internal noise filters immediately baffle the sound, keeping your ears protected.
A Secure Fit: Flexible Retainer + Three Sizes
Each Single-Ended Combat Arms Generation 4.1 Ear Plug is fitted with a retainer wing. After inserting the Combat Arms ear plug, the flexible retainer should be gently pushed into the concha, providing stabilizing support for the entire plug. This keeps Combat Arms secure in your ears while you move, shoot, climb, run, and more. Three sizes of tips come with each pair of Combat Arms Gen 4.1 Earplugs, so you can ensure all users can select a size that will fit well, stay put, and provide the fully-rated Noise Reduction Rating (NRR) these tactical ear plugs can provide. Getting a good fit is absolutely essential to the effectiveness of in-ear hearing protection safety gear. Ear Plug Fit Checking With any ear plug, correct insertion and proper sizing are both necessary to ensure the wearer receives optimum, effective noise blocking. Without the proper seal against noise, your ears remain vulnerable to hazardous noise, including gun blasts. But it can be difficult to know whether your ear plugs are properly seated in your ears. The "pump test" is a quick way you can check whether your Combat Arms are inserted correctly. First, move the rocker switch to the Closed Mode position. Then, applying gentle pressure with a fingertip, "pump" the plug in and out of the ear canal. If the ear plug is inserted properly, the acoustic seal inside the ear canal will be complete, and the pumping motion will cause a noticeable change in the pressure inside the ear canal that you should be able to feel. If the change is subtle or you cannot detect it at all, the plug has been inserted incorrectly. It may not be inserted deeply enough. Another reason an earplug would fail the pump test is that it is simply too small. Important: Because Combat Arms create this effective pressure seal inside your ears (as do many other similar ear plugs), it is a good idea to remove the plugs slowly. Wiggle to break the seal. Do not remove by pulling the cord.3M Single-Ended Combat Arms Generation 4.1 Attenuation Data
See Also