A. The reception frequency range of this detector is 1 MHz to 6.5 GHz. Therefore, it can quickly detect wireless hidden cameras, VHF/UHF transmitters, GSM/3G/4G bugs, GSM/3G/4G GPS trackers, wireless signal sources and strong magnetic field signals, etc. B. Whether in private spaces such as hotels or cars, or in places where privacy is easily leaked, such as conference rooms, changing rooms or even public toilets, it is a suitable choice. C. This hidden camera detector has 4 functions. 1. RF signal detection to detect active RF bug transmitters such as transmitting camera, GPS tracker and wireless audio bugs. 2. Camera detector to find the hidden pinhole camera through simple visual inspection using infrared laser scanning. 3. With R&D upgrades, microprocessors are embedded, enabling YOUKUKE camera detector to work smarter and more accurately, with strong anti-interference, ultra-wide detection range, comprehensive signal accumulation and algorithm, long battery life. With upgraded ultra-sensitive chips, this hidden camera detector has 6 levels of sensitivity to help you find the signal source accurately. D. The bug finder is small (11 x 2.4 x 1.5cm), lightweight (only 30g), easy to carry while protecting your privacy and business information. Portable like a pen, easy to store. Perfect for home, office, travel, car, etc. It is also recommended to scan locker rooms, bedrooms, washrooms and meeting rooms for privacy leaks. A good tool to scan your vehicle for unwanted GPS trackers hidden by the stalker. E. YOUKUKE bug finders are equipped with a rechargeable lithium polymer battery. With a full charge of 2.5 hours (DC 5V 1A), you can easily keep it working for 25 hours.