Features: Made from the internal chip of the original car& 39;s card key, it is safe and reliable, with no dead angles in 360, and the ring is sensitive. This car smart ring is made of high-quality carbon fiber material, with fine texture, stylish appearance, and can be worn on occasions. The 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. The product has a variety of sizes and two colors to choose from, which can meet your different needs. It is recommended that you carefully refer to our size chart to ensure the size is right. Applicable models: Suitable for Tesla Model 3/Y. Description: Product name: carbon fiber smart ring key Product material: carbon fiber Product color: black/black red Product size: as picture shown Product weight: the ring weighs about 10g, the packaging + ring is about 116g Pairing tutorial: Clear the air control sensing area Click the car icon in the lower left corner of the central control screen Click the icon of the middle car lock Click the + on the right side of the key Put our smart ring on the central control induction area When the screen pops up "Induction of the existing key card to approve the pairing", put the original car key/card in the central control induction area for authorization and wait for completion Package includes: 1smart key