Small microphone
The term small microphone refers to a small audio recording device. Often it is used as part of a spying operation. Equipped with high-sensitivity microphone, it allows you to clearly record voices within a radius of varying distance depending on the model. Its small size allows it to slip everywhere and not get noticed. You can place it in a bag or in a car. The device transmits the recordings remotely to you. To do this, there are two modes of transmission, namely, through the GSM network and via wifi. Note that some small microphones can be equipped with both modes of transmission at once.
the micro spy GSM uses a SIM card as well and requires a phone subscription (or a prepaid sim card) for you transmit audio recordings in real time. It works like a phone call. You make a call to the small microphone number and it automatically picks up so you can listen to the spy conversation live. But to do this, it is necessary that the device remain within range of GSM network coverage.
On the other hand, the micro spy wifi gives you more freedom as long as it knows no geographical boundaries. You will have a mobile app allowing you to connect with the device via the wifi network. This app helps you control the device remotely and even record conversations.
Powered by a rechargeable lithium battery, it has a battery life of more than a week in standby mode. The audio resolution varies depending on the model. Some even offer several resolutions to choose from to allow you to opt for good sound quality or save storage space.