Recently, the company has developed a USB-type pocket gps jammer: Trace treasure, also known as personal security expert, private track protector, mainly used to block GPS signals and avoid gps tracking. It is currently the most popular gps positioning and intercepting device in the world, with hundreds of sales per day. This USB type mini portable gps jammer has many advantages. The most compact size, the overall size is 68*20*10mm, and the weight is only 25g. It can be put into the pocket at any time. The interference radius is up to 5 meters. It is known by the shape. It can be charged by charging treasure, computer, mobile phone charger and car charger. It is mainly used for anti-tracking and positioning to protect your position. Jammer-mart also offers a variety of mobile phone jammers, WiFi jamming devices, military blockers, etc. Each type of jamming device can block multiple frequency bands, you can choose according to your own needs, if there are somewhere you do not usderstand, our customer service will answer you one by one. In the era of universalization of smartphones, inappropriate ringing noises, such as telephone noise, are extremely troublesome, causing great troubles for people's daily life and work. The signal jammer transmits the same signal interference according to the equipped high frequency part and low frequency part, so that the mobile phone is in no signal under certain circumstances, and the network searches for medium state. There are many advantages to interfering devices that focus on mobile phones and PHS, and there are many advantages to the high power jammers that the site develops and sells. High-power mobile phone signal blockers are usually fixed on the desktop, compatible with all frequency mobile phones. The interference frequency band is wide and the quality is good. Long working hours, a full charge can work for a long time. The barrier effect is good and can be applied to a variety of occasions, such as conference rooms, factories, hospitals, churches, military bases, prisons, etc. Large interference radius and high output power. https://www.jammer-mart.com/wireless-wifi-bluetooth-jammer.html https://www.jammer-mart.com/wireless-video-alarm-5-bands-portable-jammers.html https://www.jammer-mart.com/armband-gsm-3g-4g-phone-blocker.html