Features: Detect invisible threats with CC308+ Wireless Signal detectors, not agent device that identifies eavesdropping , coverts cameras, and trackers through advanced radio frequency scanning for privacy defense . Features wide frequency coverage (315MHz to 868MHz) and high sensitivity sensors to precisely locate wireless transmitters, supported by immediate sound /vibration alerts for immediate threat notification. Ideal for security awake homeowners, business professional, and frequent travel requiring surveillances detection in sensitive environment. Operates effectively in homes, offices, hotel room, and vehicles to protect private conversation and person space from unauthorized monitoring. small , PC constructed design ensures portability for active security check without compromising detection accuracy or multiple device compatibility. Specifications: Material: PC Size: about 4.8x9.3cm/1.89x3.66inch Operating frequency: 1MHz - 6GHz Battery: build -in rechargeable battery Using time: about 8 hours Package Includes: 1xSignal detectors note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.