＜Detailed Explanation＞ Although it is a new, unused item, it has been opened for photography. ★Relay Attack Prevention: Prevents theft using relay attacks, where radio waves from smart keys are intercepted and relayed to the car to start the engine. This case blocks radio waves, preventing theft by relay attack. ★Box-Type Key Case: A box-type key case with a chain inside. The chain allows you to attach your smart key, 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 a belt loop or bag. You don't have to worry about losing it, and you can 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 without worry on rainy days. 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 KK10150849