Feature:1. Ultrasound Low Frequency Interference: Can be interfered with voice information for safe processing of high and low frequency sound source mixing processing, the whole bass micro voice, in the other party is not aware of the interference, after the interference of voice information can not be recovered.2. Wide Range of Anti Recording Range: The anti recording blocker has a recording range of up to 8m and a shielding angle of 360 degrees. Mobile phone recording, video recording, and recording devices will be blocked3. Multifunctional Voice Blocker Device: Our voice blocker device can prevent phone recording, recorder recording, and video recording from being blocked.4. Long Term Battery Life: The prevent recording blocker comes with a built in battery, with a capacity of 9800mAh and a battery life of approximately 2 to 4 hours.5. Applicable Scenario: The anti recording blocker is suitable for various scenarios, such as business interviews and confidential conversations.6. Easy To Operate: Once the voice blocker device is turned on, it can be used, making it easy for both experts and novices to grasp the essentials.Specification:Item Type: Voice Recording BlockerProduct Material: Plastic, MetalWeight: Approx. 1941g / 4.3lbAnti Recording Direction: 360 DegreesBattery Type: Lithium Battery (Shipped With Built In Battery)Battery Capacity: 9800mAh.Package List:1 x Host 1 x Power Supply 1 x Manual