Who would have thought that this exquisite Montblanc leather wallet actually hides an ultrasonic recording jammer and cellular scrambler? Its exquisite leather texture and classic color scheme make it fully integrated into business occasions or high-end environments, truly achieving the perfect combination of fashion and concealed and efficient voice protection functions.
The powerful ultrasonic jamming system of P-US-M12 is designed to prevent the normal operation of recording devices on different frequency bands (such as voice recorders, camera recording functions, smartphones, etc.). 12 ultrasonic transmitters are integrated inside, which can effectively interfere with all common recording devices within a range of up to 5 meters.
Ultrasonic technology affects the microphone membrane of the recording device, making it unable to accurately capture and record clear sound. Because ultrasonic waves are silent, they will not cause any noise interference to the interlocutor or the surrounding environment when used, achieving non-sensing use.
The back of the wallet is covered with acoustic fabric to hide the transmitter underneath, which not only ensures that the transmitter’s signal will not be affected by physical obstacles, but also keeps consistent with the overall design of the wallet. This design cleverly combines technology with appearance, improving the concealment and practicality of the product.
In addition to jamming recording devices, the recording device jammer also integrates a cellular communication jammer function, which can block the communication signals of mobile phones and other devices within 3 meters to 15 meters. It covers five major cellular communication frequency bands, including CDMA 800, PCS, 3G, 4G LTE 1, and 4G LTE 2, to prevent communication devices from sending signals or transmitting recorded content to the outside during confidential conversations.
The P-US-M12 is also equipped with a remote control, which can quickly turn the device on or off without taking the jammer out of the wallet, increasing the convenience of use and reducing the possibility of being discovered during operation.
The built-in 3600mAh large-capacity battery supports the device to run continuously for 6 hours when the recording jammer function is turned on. When the mobile phone signal interference is turned on and the recording interference function is turned off, the battery life can be extended to 10 hours. Under normal use, frequent charging is not required, providing long-term privacy protection.
The built-in battery of the device is rechargeable, and users can pre-charge it and carry it with them. There is no need to connect to a power source during use, which further extends the usage scenario.
Main parameters of cellular phone blocker
| Remote control method | wireless operation |
| Interference technology | ultrasonic interference |
| Number of transmitters | 12 |
| Communication signal interference range | – CDMA 800: 860-894 MHz – PCS: 1930-1990 MHz – 3G: 2110-2155 MHz – 4G LTE 1: 790 – 830 MHz – 4G LTE 2: 2620-2690 MHz |
| Recording interference range | 1 – 5 m |
| Communication signal interference distance | 3-15 m from the house |
| Supported communication interference type | Global System for Mobile Communications |
| Power adjustment | not adjustable |
| Total output power | 2.5W |
