Assume someone is recording. A phone face down on the table. A pen in a pocket. Something planted before you sat down. One leaked recording can end a negotiation.
The VIM-BLOCK4 is a working power bank with nine ultrasonic emitters inside it. Press the button, or use the remote from up to twenty metres, and every microphone within about 1.5 metres records noise instead of words. 6000mAh, USB-A, USB-C and Micro-USB out, and it genuinely charges a phone.
It covers a phone on the table in front of you and anything in a nearby pocket or bag. It does not cover a whole room. For a boardroom, the 6 to 8 metre units in this range are the right size.
Yes, 6000mAh with USB-A, USB-C and Micro-USB output and an LED display. That is the point of the disguise: there is a normal reason for it to be on the table.
About ten hours in F1 at half output, about five in F2 at full power. It takes eight hours to charge.
Behind the unit. The nine emitters are arranged on three sides for 300 degrees, so put the back of it toward a wall or toward the side of the room you are not worried about.
One to twenty metres, so you can start it from a seat away from the device.
You can protect your own conversations in a space you control, and that is what these are made for. Two things to keep in mind. This is an ultrasonic device: it emits sound above the range of human hearing, not radio signals, so it is not a radio jammer, and radio frequency jamming equipment is regulated separately under the Radiocommunications Act 1989. And it works on every microphone in range, including ones you may be relying on, so switch it off before a call you want recorded and never use it to interfere with a recording someone is lawfully entitled to make.
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Power Bank Voice Recorder Blocker, Working Charger & Remote
