GPS Mobile Phone Signal Jammer / Blocker

This device is suitable for classroom, meeting room, library, movie theater and other places where need to keep quiet. Due to its small size and easy to hide, the device is popular with teachers and administrators. As the most popular portable mobile phone jammer, this product has a small size, easy to carry. Can block 8 frequencies, and have a very large jamming range. With a separate frequency control switch, you can select the frequency range that needs to be disturbed as needed.

Product Information
Name: 10 Antennas Handheld Cell Phone Jammer, Block 2g/3G/4G /5G and LOJACK GPS WIFI Signals

Range depend on signal strength, approximate : 10-30 feet