This advanced portable security device combines Bluetooth speaker functionality with sophisticated ultrasonic jamming technology to protect confidential conversations from unauthorized recording.

• Certified Security: Officially tested and certified by the Third Research Institute of the Ministry of Public Security
• Advanced Protection: Self-developed ultrasonic mixer effectively blocks recording devices including mobile phones and voice recorders
• Safe Operation: Ultrasonic noise interference technology operates without human detection and produces no radiation
• Discreet Design: Bluetooth speaker styling allows music playback while providing recording protection
• Remote Activation: Device can be activated remotely via mini-program or included remote control for maximum discretion

Ideal for meeting rooms and confidential discussions where privacy protection is essential. The device is ready to use immediately upon startup and offers multiple control options for flexible operation.