A listening tracking device that you put a regular SIM card into, then you call it from your phone on the number of the SIM card inside the device. The device will automatically open the line, allowing you to listen to the conversations around the device. * Device specifications: - 1 - The device is the original version. 2 - Small size and easy to use. 3 - Clearly hear the sounds surrounding the device. 4 - You can listen and monitor from anywhere in the world. 5 - The battery lasts up to 4 days. 6 - Works with Mobily, Zain, and STC SIM card providers.