1. Exceptional Battery Capacity: This portable extended battery case boasts a battery capacity greater than an for Airtag. Profit from prolonged usage without frequent replacements, enhancing your experience and ensuring continuous tracking. 2. Optimal Power Source: Our motion tracking for Airtag battery case utilizes 2 * AA batteries (Not included batteries). We recommend using Lithium for longer lifespan. Alkaline batteries are not advised, ensuring efficient operation and extended life of your device. 3. Easy Installation Process: Remove for Airtag's battery and metal door, place it on the customized contact point, insert AA batteries(Not included batteries), and tighten with the provided hex wrench. Experience the convenience of using a GPS tracking charger box effortlessly. 4. Unmatched Durability: Rated IP69 for waterproof capabilities, this battery replacement charger case is super sturdy. Smaller than an uncased for Airtag by about 1/3 in volume, it's compact yet solid for various demanding environments. 5. Advanced Construction: Featuring ultra-strong fiber-reinforced composite structure and CNC machined screws, this small battery charging case is versatile for cars, trailers, motorcycles, luggage, camera bags, backpacks, snowmobiles, toolbox, etc. Color: Black Material: ABS Package Contents: 1 * Magnetic bag