1、Active Detection Function: With active detection function, the host can be carried with you, and can be detected when there are eavesdroppers and cameras in the environment. 2、With Indicator Light: It has a signal strength indicator, which can quickly find the source of the signal, and the sensitivity can be adjusted by adjusting the function buttons. 3、Multipurpose: It can check whether there are wireless cameras, bugs in hotel rooms, public bathrooms, locker rooms, hotels, cars, offices, etc. It can also be used in business negotiations, school proctoring places, factories, military equipment, etc. 4、Secrecy Protection: It can effectively prevent eavesdropping, candid photos and leakage of individual secrecy and business secrets. 5、Gift: This is a great birthday, holiday or anniversary gift for someone who values secrecy! Item Type: Camera Detector Product Material: Plastic, Electronics Charging Interface: Micro Usb Working Time: 5 Consecutive Hours Antenna Gain: -56db Charging Power Supply: DC5V1A Sensitivity: 4 Levels Adjustable Receiving Frequency Range: 1MHz-6.5GHz Signal Acceptance Range: Approx.5cm-10m / 2in-10.9yd Detection Distance: Approx.10cm-10m / 3.9in-10.9yd Battery Type: Built in 200mAh Lithium Battery (Included) 1 x Host 1 x Charging Cable 1 x User Manual