Although it is a brand new, unused item, it has been opened for photography. ★ Relay Attack Prevention: Prevents theft using relay attacks, which receive radio waves from smart keys and relay them to the car to start the engine. This case blocks radio waves, preventing theft by relay attack. ★ Box-Type Key Case: This box-type key case has a chain inside. You can attach your smart key to the chain, so you don't have to worry about the smart key falling out when you open the zipper. ★ Convenient Carabiner: Comes with a carabiner, so you can attach it to your belt loop or bag. You don't have to worry about losing it, and you can simply open the zipper and take out your smart key when you need it. ★ Just the Right Size: The internal dimensions of the box are 8.5cm x 4.3cm. It's the perfect size to fit your smart key. The product size is 10.5cm x 6.5cm x 3cm. It's compact and won't get in the way whether you put it in your bag or attach it with the carabiner. ★ Carbon Leather Material: Durable and water-resistant, so you can use it for a long time without worrying about rain. Available in black. It's a cool and stylish key case, perfect for gifts. Ideal for friends and family who have bought a new car, or for housewarming gifts. It's a design that anyone will love. ※ Internal box size: 8.5cm x 4.3cm ※ Product size: 10.5cm x 6.5cm x 3cm ※ Material: Carbon leather NO12032114