Who would have imagined that this elegant Montblanc leather wallet conceals an ultrasonic recording blocker and cellular signal scrambler? Its luxurious leather finish and timeless color palette integrate seamlessly into professional settings or upscale environments, achieving a flawless blend of style and discreet, effective voice protection capabilities.
The robust ultrasonic interference system of P-US-M12 is engineered to disrupt the standard functioning of recording devices across various frequency bands (including voice recorders, camera audio functions, smartphones, etc.). 12 ultrasonic emitters are embedded within, efficiently obstructing all prevalent recording devices within a radius of up to 5 meters.
Ultrasonic technology targets the microphone membrane of recording apparatus, preventing it from accurately capturing and storing discernible audio. Since ultrasonic waves are inaudible, they do not create any disruptive sounds for the speaker or the nearby setting, facilitating discreet operation.
The rear of the wallet is finished with acoustic fabric that conceals the transmitter beneath, ensuring the signal’s integrity remains uncompromised by physical barriers while aligning with the wallet’s overall aesthetics. This innovative design merges technology with style, enhancing the product’s concealability and functionality.
Alongside recording device interference, the recorder jammer encompasses a cellular communication disruptor function, capable of obstructing mobile phone signals and other devices within a range of 3 to 15 meters. It spans five primary cellular communication frequency bands, including CDMA 800, PCS, 3G, 4G LTE 1, and 4G LTE 2, preventing communication devices from transmitting signals or relaying recorded content during private discussions.
The P-US-M12 comes with a remote control that allows for swift activation or deactivation of the device without needing to remove the jammer from the wallet, enhancing user convenience and minimizing detection risk while in use.
The integrated 3600mAh high-capacity battery supports continuous operation for 6 hours with the recording blocking feature active. When the cellular signal interference is engaged while disabling the recording blockage, the battery life can extend to 10 hours. Under standard usage conditions, it requires infrequent charging, offering prolonged privacy assurance.
The device’s built-in battery is rechargeable, allowing users to charge it beforehand and carry it conveniently. There is no necessity to connect to an outlet during operation, further broadening its usability scenarios.
Main specifications of cellular signal blocker
| Remote control mechanism | wireless operation |
| Interference methodology | ultrasonic interference |
| Number of emitters | 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 distance | 1 – 5 m |
| Communication signal interference distance | 3-15 m from the house |
| Supported communication interference types | Global System for Mobile Communications |
| Power de-adjustment | not adjustable |
| Overall output power | 2.5W |
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