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  • It does what it claims

    posted by Muraca on 10/23/2012

    Involvement:Expert (understands the inner workings) - Ownership:more than 1 month


    Works pretty well and the price is very low. Comes with battery


    You can be misguided to buy it expecting to be able to listen to the other side of walls, doors or whatever you please, but it works amplifying the sound of the wall so you will be able to listen to insects crawling inside it better than the sound of the other room.

    Another detail is that it comes with a Lion battery inside it, so if you forget it for some months inside your desk you will probably have to repair it (buy another battery with the same specs and size)


    Very good once you understand how it works


    If you need to listen to sound in solid things (like walls, tubes, etc) this gadget is for you.

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