1/3″ or 7 mm Invisible Amplified Battery powered Earpiece with 337 battery

(12 customer reviews)

$49.99 $33.99

Out of stock


Invisible  Wireless Battery Powered  Earpiece

Invisible  Wireless Battery Powered  Earpiece is our Premium amplified headsets which allow you to hear voices clearer . They are compatible with all of our models including MP3 set. It  has strong clear sound and made of skin-friendly plastic. This provides  compact fit into your ear.
Notice: These earpieces are an accessory to our different models, and the package only includes one earpiece without the module neck-loop, microphone. These Earpieces have to be ordered separately.What is special about this kit?So sound travels mostly  towards your ear drum and not outside of the ear canal.

This unique feature will greatly  enhance your safety.

Nobody will be able to hear you from outside!!!

They are 100% invisible in your ears!

                        How does it work?

Earpieces are completely invisible wireless amplified  micro audio speakers and fit in your ear and are completely unnoticeable. This Spy Earpiece requires 337Battery. Which could last 3.5 – 8 hours depending on quality of the battery. T hey are active receivers that reproduce audio and get power from battery. The micro earpiece, once it is in your ear, cannot be heard by anyone else but you. Note: you can adjust volume by your hone or placing magnetic neckloop further from your ear.  This earpiece  compatible with all of our models including MP3 -SET…

Kit contains:

  •  1 x Battery Powered Amplified Wireless Earpiece. Dimensions are 5 x 7 x 10 mm or 0.2 x 0.3 x 0.4 inch. Shape : anatomical shape
  •  1 x 337 Sony Battery.

Wireless invisible gsm earpiece Specification Compatibility : The earphone, together with the inductive loop work with mobile phones, radiotelephones. Device used for  two-way communication. They may also be used to play the sound using any portable sound player: an mp3 player, a dictaphone.


Peak Output                                                 115dB

Relative Limited Sensitivity Index            <80dB

Peak gain                                                      40dB

Equivalent input noise base                        30dB

Audio Range                                                  200~6400Hz

Operating Current (static)                             0.65mA

Operating time (SONY 337battery)              10 hours Standby
3~5 hours operating time
Weight                                                            0.8 gram

12 reviews for 1/3″ or 7 mm Invisible Amplified Battery powered Earpiece with 337 battery

  1. Linda B.

    Glad I purchased this

  2. Betty G.

    Crazy! I give the performance of the product a 10!.

  3. Tina B.

    Thanks, Where to buy batteries. Existing one lasted only 4 hours

  4. Amanda R.

    Battery is difficult to find

  5. Liz E.

    Lovely eaprieces. you won’t have a problem. .

  6. John B.

    Little bit pricey toy. You need to develop your insertion technique

  7. Wilma M.

    Same as picture shown. Very happy finally got from this seller .

  8. Ravi D.

    Tests are fun guys

  9. danielle dougherty

    It is awesome, I will give it 5 star for the variety, Overall this is superb

  10. nari lee-manuel

    So helpful!! It is great for the students , its so perfect. Thanks

  11. vsdvda

    Well..ill loved using in my exam. This is very helpful and give it a good rating.

  12. Samantha Stever

    I love this gadget…it helped so much. It actually works awesomely!

Only logged in customers who have purchased this product may leave a review.