Product Name: (j003) GSM Mobile Phone Jammer Signal Blocker Portable Model NO.: j003 Application: School Frequency: 1900~1990MHz Frequency Range: CDMA800 Trademark: ate Transport Package: Box Specification: 8kg Origin: China HS Code: 9031809090 Product Description Mini Type Portable Signal Blocker GSM 3G WiFi GPS Devicevideo demo link https://youtu.be/vvwau5RjDPcThis is a mini hidden type jamming device. It has many advantages:First of all, the design of this device is very portable. It has very small size (95mm*48mm*17mm), can be easily put into pocket or backpack. Second, the device has a very strong concealment. The device looks like a portable power source, can ensure that you are not easily perceived by others during your use. Third, although the device is very small, but it can also jamming multiple signals. Whether you need to block cell phone signals or WIFI signals or GPS signasl, this device can do it.The device is one of the most popular handheld jammers. it is often used in classrooms, libraries, conference rooms, cinemas and so on. Because this device is small in size and easy to hide, so it is very popular among customers.Product Features:1.Small size, easy to carry, easy to operate2.The whole production process strictly follow the ISO900 quality system, and through the CE certification, stable and reliableJamming frequenciesGSM/CDMA: 850-960MHz3G: 2110-2170MHzWiFi: 2400-2485MHzGPS: 1570-1610MHzJamming radiusUp to 10 metersPower supplyPower plug, car adapter or built-in batteryBuilt-in battery1200mAhBattery Life2 HoursTotal output power0.5WVoltageAC110~240VOperating temperature-10ºC to +50ºCOperating humidity5% to 80%Device size95mm*48mm*17mmDevice weight290 g