Feature:1. We put a blank chip in the carbon fiber smart ring. Therefore, you don't have to worry about not being able to add it to your car.2. The key ring is convenient to use when you cannot use your phone, the battery cannot be used, or others need to use it temporarily.3. To lock or unlock, click the key ring in the center of the pillar on the right side of the driver's window.4. The key ring is lightweight, waterproof, easy to carry, take it in your hand to unlock. And can easily get in and out in any situation.5. Carefully selected carbon fiber material, which gives it a smooth and clear texture.Specification:Item Type: Smart Key RingMaterial: Carbon FiberColor: BlackInner Diameter:Approx. NO.6: 16.5mm/0.65in, NO.7: 17.3mm/0.68in, NO.8: 18.1mm/0.71in, NO.9: 18.9mm/0.74in, NO.10: 19.8mm/0.78in, NO.11: 20.6mm/0.81in, NO.12: 21.4mm/0.84inFitment:Fits Tesla Model 3 All YearsFits Tesla Model Y All YearsFits Tesla Model X 2021-2023Fits Tesla Model S 2021-2023How to use:1. Organize and clear the sensing area of the central control2. Click the car shape button in the lower left corner of the central control screen3. Click the middle lock button4. Click the \"+\" to the right of the key5. Place our smart ring on the central control induction area6. When the screen pops up \"Induction of existing key card to authorize pairing\", place the original car key/card in the central control induction area for authorization and wait for completion..Package List:1 x Smart King Ring1 x Packing BoxNote:Avoid direct contact with products with high magnetic fields or being in an environment with high magnetic fields during product use.