Feature:1. Three Output Directions: Equipped with three output directions and three gear levels, with a 270 degree shielding angle, low frequency silence, and effective protecting against phone recordings and voice recorders.2. Ultrasound Sound Blocking: This device can block out sound sources using ultrasound technology, preventing voice information from reaching the microphone and securely encrypting the blocked sound, making the voice information irretrievable.3. Wireless Remote Control: Features a double switch design and comes with a wireless remote control. Simply press the remote control switch key to conveniently control the device from a distance within a range of 1 to 30 meters.4. Portable Design and Long Battery Life: Compact and portable design for easy carrying, with a large 4000mAh battery capacity allowing for a 2 month standby time and 4 hours of continuous use. Convenient Type C charging port.5. Multiple Applications: Provides strong interference against illicit recording activities, suitable for commercial negotiations, confidential conversations, and other scenarios in mobile work environments.Specification:Item Type: Recording BlockerMaterial: Plastics, electronicsCharging Port: Type CWorking Time: 180minWorking Range: Less Than 1.5m for Ordinary DevicesBlocker Battery Type: Built in 4000mAh li battery (included)Remote Control Battery Type: Built in CR2032R 350mAh li battery (included).Package List:1 x Recording Blocker1 x Charging Cable1 x Remote Control 1 x User Manual