No one would guess that this completely working desk best calculator hides a secret. It's an ideal device for any private detective or private investigator in corporate or personal investigations as it wouldn't arouse suspicion, as a calculator is common location in any residence or office. There is certainly no visible indication that this is anything but a calculator as the voice recording system is hidden inside.
The calculator recorder utilizes an SD card, up to 32GB, which can store 570 hours of recording, and is battery powered, giving about 12 hours of sound activated recordings. The back of the calculator has to be removed, by the private investigator or private detective, to access these and to operate the start/stop control. The use of an SD card reader enables the private detective’s or private investigator’s evidence to be retrieved on his or her PC to support the investigation in progress. This is an incredibly effective device for covert surveillance as no one would suspect their conversations had been becoming recorded by such an innocuous item.
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