✔️Jingle-Free: 100% Silicone, Our jingle free pet ID tags are 100% food grade silicone, Safe and Durable. Size: Diameter Φ: 1.2" Height: Hangs 2.1". ✔️Setup and use: Scan the tag QR code to activate the tag, Links to free pet profile page, Can enter multiple emergency contact/ upload multiple pet photos/ Home Address/ Medical Info etc of your pet. One account can manage multiple pets. NO APP REQUIRED, NO SUBSCRIPTIONS, NO BATTERIES! ✔️Receive Pet Location Alert Email: It is not a GPS tracker, but if someone scans the QR code, it will send your pet's GPS location to your email, as well as you can view the scanned location on Google Maps. This premium service is free! QR Code pet ID tags are important to ensure the safety of your pet. ✔️Personalized Pet ID tags: This is a pet id tag that can be modifiable infomation at any time, when your address and phone number change or as your pet grows older, changes in age and size, you can change it at any time depending on the time and situation. This is a flexible, vivid and distinctive pet ID tag. ✔️RESPONSIVE CUSTOMER SERVICE: If you have any issues at all, please find our contact information on our website and reach out. We will respond right away!