Portable GSM 3G Cell Phone Handheld Blocker Video
GSM 3G GPS WiFi Signals Mini Portable Jammer
This is a mini portable GPS jammer. Size only 62mm*34*120mm, very easy to carry and hide. Has an independent band switch, you can turn on or off a certain jamming frequency band as needed. Have cigarette lighter charger, you can use it in car.
You will know more about this product by watching this video. You can learn more about cell phone jammer from video.