1、Unique Ultrasound Interference: This voice recording blocker utilizes groundbreaking ultrasound interference technology to disrupt and mix high and low frequency sources, making voice information from any recording device effectively unrecoverable. 2、Versatile Functionality: Serving as both an anti recording device and a portable power bank, our voice recording blocker effectively prevents recording on smartphones, voice recorders, and surveillance devices. 3、Easy to Operate: With simple one button operating, the voice recording blocker can be uses. It offers three output directions, two adjustable modes, and a wide shielding angle of 300 degrees for comprehensive coverage. 4、Remote Control Capability: Equipped with a wireless remote control, our voice recording blocker enables remote device switching and operating within a range of 1 to 50 meters, providing convenient control at your fingertips. 5、Wide Range of Applications: The voice recording blocker is suitable for various scenarios, including business interviews and confidential conversations, ensuring the protection of sensitive information. Item Type: Voice Recording Blocker Material: Plastic Weight: Approx. 307g/10.8oz Battery Type: Li battery 4000mAh (shipped with built in battery) Anti Recording Sound Pressure: 120DB/30cm(maximum) Anti Recording Direction: 300 degrees (maximum) Remote Control: 433 wireless remote control, 1 to 50 meters away Remote Control Battery: Li battery, 160mAh (shipped with built in battery) 1 x Voice Recording Blocker 1 x USB Cable 1 x User Manual 1 x Remote Control