1We put a blank chip into the smart carbon fiber ring. Therefore, don't worry that you can't add it to your car. 2The key ring is convenient to use when you are unable to use the phone, the battery is unable to use or others need to use it temporarily. 3To lock or unlock, click the key ring in the center of the pillar on the right side of the driver window. 4The key ring is lightweight, waterproof, easy to carry, bring it in your hand to unlock. And can be easily entered and exited in any situation. 5Carefully selected carbon fiber material, which makes it have smooth and clear texture. Item Type: Smart Key RingMaterial: Carbon FiberColor: BlackSize: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:Fit for Tesla model 3 2019-2022 Fit for Tesla model X 2017- Fit for Tesla model S 2017- Fit for Tesla model Y 2019-2022How to Use:1. Organize and clear the central control sensing area2. 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 side of the key5. Put our smart ring on the central control induction area6. When the screen pops up "Induction of existing key card to approve pairing", place the original car key/card in the central control induction area for authorization and wait for completion. 1 x Smart King Ring1 x Packing Box Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.