Features: Very thin card sized design with 2 year battery ensures effortless portability and reliable trackings for your essential like wallets, key, and gadgets through the Find app. This 1.8mm trackers features fast sound alerts, multiple device synchronization, and splashes proof construction for multifunction item location across iPhones, , and smartwatches. Perfect for busy professionals, frequent travel , and parents needing to monitor children's belongings or elderly family member' devices with real time trackings. Locate misplaced items instantly in crowded airports, cluttered offices, or during outdoor activity using precise detection and audible guidance. Engineered with strong plastic housing and energy efficient technology, this credit card style item locator outlasts bulkier alternatives while maintaining cautious defense . Specifications: Material: Plastic Size: about 85x54x1.8mm/3.4x2.1x0.1in Package Includes: 1xGlobal Positioning Card trackers 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.