Unused items from my home. I am selling them because I have no plans to use them. Although they are new and unused, I have opened them partially for photography. Brand: HOADMEAT Product Name: Compact Size Cat/Dog Collar to Reduce Burden on Pets - Prevents Loss of Cats and Small Dogs (Similar to Apple's AirTag product, it provides pet loss prevention and location information) Adjustable size (18-32cm) 48mAh button battery is replaceable (3 spare batteries) Apple "Find My" - No monthly fee The following is quoted from the product page: [Integrated Set with Small Tracker Pet Collar] This product is an integrated set of a miniaturized tracker and a pet collar. The set consists of two parts. One is an adjustable collar that can be adjusted in size from 18cm to 36cm around the neck, allowing it to fit comfortably around your pet's neck. The other is a miniaturized tracker that is attached to the collar. This tracker is equipped with the same location tracking function as Apple's AirTag and can be securely attached to the collar. Pet owners can track their pet's location in real-time through this tracker, effectively preventing their pets from getting lost. [Product Overview] An integrated set of a tracker and collar. Tracks pet's location in real-time and effectively prevents them from getting lost. [Tracker Features] Size: Weighs only 2.7g, height 1.25cm, diameter 1.7cm (industry's smallest class, minimizing the burden on pets) Function: Equipped with the same location tracking function as Apple AirTag. iOS MFI certified (ID: 6976839670025) & Findmay label, fully compatible with the "Find My" function of iPhone/iPad/Mac (no app required). Stable connection, privacy protected. Attachment: Can be securely attached to the collar. [Battery] Time: Approximately 2-3 months (using 48mAh CR1225 lithium battery) Accessories: Main unit battery + 3 spare CR1225 batteries (for replacement) + plastic clip for battery replacement Replacement: CR1225 is versatile and easily available.