Cc308 Full-frequency Bug Detector, Camera Detector, Lens Detector with Earphone and Charger Environmental economy, high temperature resistant, corrosion resistant low-voltage prompts, built-in rechargeable battery Laser Detection: Windows host can be seen through the eyes of all within sight of the camera facing the camera With a signal strength indicator lights that can quickly find the signal at source Adjust potentiometer adjustable sensitivity. (Greater sensitivity to widen the scope of or reduce the sensitivity to detect reduced Detection range) quickly identify the waves at source Adjust potentiometer adjustable sensitivity. (Greater sensitivity to widen the scope of or reduce the sensitivity to detect reduced Detection range) quickly identify the waves at source