LongLife series 20PRO K+ is an upgraded version of LongLife series, due to a surge in demand for even better sound quality we have decied to use a Knowles Microphone on the device which gives it competitive edge at an affordable price.
GSM Spy Bug LONGLIFE 20PRO K+ can last for up to 20 days in stand-by mode. It is a very reliable listening device with easy installation and very good quality in standby and call-back performance. The design is similar to the rest of our other LongLife units, focusing on a minimalist look so the device can be very easily disguised.
The sound quality is very similar to the Glite series where we are using a similar microphone but a more advanced chip structure, this unit stays very basic in terms of commands. Voiceback activation is the only command.