Let’s dive into the key differences and upgrades between AirTag 1 and AirTag 2. Key Upgrades in AirTag 2The second-generation AirTag introduces several technical and functional upgrades. Here’s an overview of the major upgrades that come with the AirTag 2:New Ultra Wideband ChipApple’s latest U2 Ultra Wideband chip replaces the U1 chip used in the first-generation AirTag. The U2 chip provides up to 50% more accuracy in tracking items, especially in crowded or complex environments. In addition to performance upgrades, the AirTag 2 uses more recycled materials, making it an eco-friendlier option compared to the first-generation model.