micro-size completely-in-ear-canal wireless earpiece

The device is designed to be used under crucial circumstances. This strongly requires experience. You will most probably fail in fulfilling your task successfully if ignoring a applied instructions. Please carefully examine device specifications, a user manual, a health notice and a Bluetooth clip/headset/dongle user manual prior to using the device.

Instructions related to the micro earpiece.

Please, remember, the micro earpiece is a special usage product and it requires a corresponding care. Keep in mind, that the micro earpiece is a personal usage device and that a thorough ear canal cleaning is required each time prior to inserting the earpiece.

An additional protection from ear wax (cerumen) by using adhesive cerumen filters for hearing aids like an AdHear Plus 4 mm or an AdHear 5 mm or a similar product, or any handmade is always preferred. A surface of the micro earpiece must be clean to ensure the filter is fixed reliably. It is not generally necessary to replace the cerumen filter with new each time using the earpiece. Always keeping the ear canal clean will save disposable filters.

One can made a useful filter from a medical emplastrum and some sort of a tissue.

Never apply force when inserting and removing a battery to avoid breaking an outside contact of the earpiece.

You can freely wipe the earpiece with any hygienic cotton wool disk or so. Avoid excessive liquid to get on a sound output side or on an inside contact of the earpiece.

There is an axis of an inner receiving antenna. The axis must be parallel to magnetic field intensity lines produced by the neck loop for the best and stable sound volume. To achieve this you must place the earpiece inside your ear with the battery positive (+) surface looking forward or backward if the loop is on a neck. And to place the earpiece the same side ear with the battery positive (+) surface facing upwards or downwards if the loop is on a shoulder.

The micro earpiece must be powered with a SR416SW or 337 type watch battery. You can easily find it in a watches shop or at a watches repair. Always keep the proper polarity! There is an internal wrong polarity protection, but wrong polarity can in fact result in damaging the device which is not covered by a warranty. The battery positive terminal is larger and has a "+" mark. The earpiece positive terminal is the outside contact and the negative is the inside contact.

The battery power is enough for 24 hours average earpiece work. Operation time depends on a volume of sound produced and on an initial battery state. There is a ~10% per year self discharge in button cells. When the battery goes discharged, the micro earpiece becomes quiet and then stops producing sound. A minute before the battery goes absolute zero, the micro earpiece's chip will fail in proper function and will produce a whistle which can be heard from an outside. Never use batteries which operated 20 hours or more in total time under any crucial conditions!

Remove the battery from the earpiece when not in use and store the battery separately. It is suggested to seal the battery in its original packaging to prevent it from short circuit and being quick discharged over any conductive material.

Sometimes the battery compartment can fit the battery not very firmly. This comes if the battery height varies from a manufacturer. This is generally allowed that you can tightly press the outer contact of the micro earpiece when there is no battery placed. Though you must never apply excessive force.

Tips related to the neck loop with a stereo plug.

Using a portable headphones amplifier (something like boostaroo.com or any similar product) will more likely increase an output power of the induction loop transmitter.

A volume of your favourite music in your digital player is sometimes not normalized, this means its digital records can be made louder without affecting a sound clearance. If the performance volume of your digital player with the passive transmitter is too low, you can sometimes increase the volume with any PC sound editing software. The same time you should avoid a so-called 'sound clipping' and a distortion when a level of signal is raised too much and waves are cut at a 0 dB level (the highest possible level).

Tips related to the neck loop with a specific cell phone model plug.

Though the earpiece produces a relatively quiet sound and emits the sound directly into an eardrum, relatively loud sounds can be heard from an outside in quiet environment. Always set the sound volume with the cell phone volume control just enough to be clearly heard by you, and no louder.

Deliberate touching a microphone produces a specific noticeable noise, this can be sometimes used for simple communications.

Avoid wearing too solid clothes for the best whisper detection.

You can easily dial the last number by pressing a button on the wired headset.

Notes related to the neck loop with a Bluetooth set, to a Bluetooth clip, headset or dongle with a stereo jack.

Bluetooth devices require pairing prior to the first operation. Please read an applied original Bluetooth headset manual for instructions on how to pair the Bluetooth headset with a cell phone.

Though the earpiece produces a relatively quiet sound and emits the sound directly into an eardrum, relatively loud sounds can be heard from an outside in quiet environment. Always set the sound volume with the Bluetooth set or the cell phone volume control just enough to be clearly heard by you, and no louder.

It is suggested to wear the Bluetooth set facing back (facing your breast) under clothes. This makes a blinking blue light to be invisible to anyone, but you. You can freely stick the blinking light with any non transparent insulation tape or so.

Avoid contacting a microphone with your clothes, this can produce a noise.

Deliberate touching a microphone produces a specific noticeable noise, this can be sometimes used for simple communications.

Avoid wearing too solid clothes for the best whisper detection.

Plugging the Bluetooth set into a charger acts as a 'reset'.

The neck loop is more electric power consuming than the most of usual wired earpieces, therefore an average operation time is expected to be 1/5 times less than that in the original headset manual and generally depends on an average sound volume.

The transmitter loop contains a set of wires which operate as a radio signal transmitting antenna. Never apply force to pull the loop to avoid breaking the wire.

You can easily dial the last number by pressing a button on the Bluetooth set.

Guides related to the cell phone.

Do not forget to turn off all sounds, alarms, reminders and a vibrating alert on your phone. You can more likely lock a keypad as well: this does not affect a wired headset call answer button and Bluetooth set buttons. Always connect a wired headset or pair and connect a Bluetooth set before setting up your phone ring tones, sounds, volumes, etc. That ensures a 'headset' phone profile is currently active and that you modify this profile settings.

Do not forget to raise an other side person's phone talk sound volume to the highest possible level for the best whisper recognition.

Set up an automatic incoming call answering on your cell phone. This allows you to pick up a call without need of pressing any buttons. Please note, some phones do not allow an automatic calls answering if in a silent mode profile. Instead, record quiescent with a phone sound recorder and set it as a ring tone.

Set up a last dialled number on your cell phone to the one you wish to call. You can easily dial the last number by pressing a button on a wired headset or on a Bluetooth set.

Set up your phone to connect to paired Bluetooth devices automatically. This allows a reconnecting any time if a connection is dropped accidentally.

If your cell phone volume and the Bluetooth set volume can be adjusted independently (this depends on a phone, sometimes both volumes are automatically synchronized), you are suggested to set the phone sound volume to a low level and to adjust final volume with the Bluetooth set volume control buttons. This minimizes a risk of a telephone speaker to turn on if a connection is dropped accidentally.

Do not place a cell phone too close (within centimetres) to the wired headset or to the Bluetooth transmitter microphone, this can invoke a noise.