The ANSTY MR-02 Magnetic Phone Cooler and External Battery is a multifunctional cooling device designed to effectively reduce smartphone overheating and maintain stable operation. Its powerful cooling system quickly reduces heat generated during gaming, video recording, and extended use. The magnetic mounting system ensures a secure fit, while the built-in 2000 mAh external battery provides additional charging when needed. An LED temperature indicator allows you to easily monitor the cooling status.