Feature: 1. Multiple Interception: The recording blocker supports 360?? all round coverage interception, effectively preventing leakage of mobile phones, recorders and video recordings. 2. Non Recoverable: Can safely process voice information interception, with high and low frequency audio source mixing can process the whole process of low voice, which is unrecoverable. 3. Wide Coverage: Adopt ultrasonic interference sound source, hole type design, with 37 transmitter heads, wide coverage range, and maximum interception distance of 6 meters. 4. Lithium Battery: The blocker is equipped with 8000mah large capacity lithium battery, which can run for 2?4 hours, the 4 indicator lights can easily grasp the interceptor power. 5. Applicable Scenes: The blocker is easy to operate and can be used immediately after startup, suitable for confidential meeting, business negotiation, school, hospital, research and development center, etc. Specification: Item Type: Recording Blocker Model: F11 Material: ABS Battery: 8000mAh 12.6V lithium battery (built in battery) Endurance: 2-4 hours Charging Time: 3 hours Shutdown Current: 60uA Interference Distance: Maximum 6 meter / 19.7ft Anti Recording Direction: Maximum 360?? Product Size: Approx. 16 x 8 x 9.3cm / 6.3 x 3.1 x 3.7in. Package List: 1 x Host1 x Adapter1 x User Manual Note: 1. The equipment is not waterproof, please place the equipment in a dry place.2. When using the anti recording function, do not block the output direction. Placing it in a bag or pocket will affect the shielding effect.3. When the anti recording is turned on, it will interfere with phone calls, microphones, etc. Please be more than 5 meters away from the shield when using.4. Do not use the hearing aid in front of the wearer.5. Try not to use the equipment while filling for a long time, which may lead to overheating and failure of the equipment.