Noise level limit
The maximum permissible sound pressure level that can reach the user's ears. Noise limits are necessary to protect the hearing aid from excessively loud sounds (gunshots, explosions, etc.). The limiting function is automatically activated when the sound pressure reaches a set limit to reduce or block the signal before being transmitted directly to the user's ears. Blocking loud sounds is achieved either by built-in electronics or by closing sound-conducting channels - the specific implementation of the function depends on the model of active tactical headphones.
Headset (microphone)
The presence of a microphone in the design of tactical headphones actually turns them into
a headset and allows them to be used for voice communication - for example, to confirm received commands over a walkie-talkie, talk on a paired mobile phone, etc. Also, built-in microphones often allow fighters to communicate with each other without the need to use radios and other external means.
Water protection
Tactical headphones are protected from dust and moisture. This paragraph also clarifies the level of such protection in accordance with the IP standard.
The degree of protection is usually denoted by two numbers according to the IP standard. The first number corresponds to dust protection. As a rule, tactical headphones indicate their maximum ratings of “5” and “6” (dust resistance without complete closure and complete dust resistance, respectively). The second digit indicates the degree of protection against water. For moisture-resistant models
with splash protection, markings up to the number “6” are used. Full
water resistance corresponds to levels 7 (possibility of immersion under water to a depth of 1 m for half an hour) or 8 (possibility of prolonged operation under water at a depth of more than 1 m). Thus, the maximum degree of protection according to this standard is IP68, completely sealed. There are also IPX8 markings, where the first digit is not indicated - this means that the headphones have not undergone official certification for dust resistance. However, water resistance level 8 automatically entails a sealed case that is also impenetrable to dust.
Operating time
Operating time of the headphones on one set of replaceable batteries or a full charge of the built-in battery (see “Power source”).
Using this parameter, you can roughly estimate the duration of use of tactical headphones without the need to replace batteries or recharge the power source. It is also intended to compare the real capabilities of different models.
Auto switch-off
Automatic shutdown is intended to save battery power or the built-in battery of tactical headphones. The
auto-shutdown feature may be based on failure to detect sounds or activity through built-in sensors or detection algorithms. In another implementation, the headphones automatically turn off after a set time of inactivity, and you can return them “to life” by pressing any button or turning the analogue control (see “Control”).
In the box
Additional equipment included with tactical headphones.
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Case. Case for storing and transporting headphones. Cases are soft fabric cases: they protect the device from dust, moisture and dirt during storage and transportation. The cases are also used to store additional items such as a charging cable or replacement batteries.
— Batteries. Replacement batteries of standard size for tactical headphones with appropriate power supply. This configuration allows you to use the device “out of the box” without purchasing additional energy sources. Note that the kit usually includes elements in the form of disposable batteries, and not rechargeable batteries.
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Audio cable. The standard equipment includes a special cable that can be used to connect tactical headphones to various audio sources or communication devices. As a rule, the supplied audio cable has ends with connectors for a mini-Jack socket (3.5 mm), however, there are other options for its implementation - it is advisable to clarify these points separately.
