Thank you for viewing. [Unused Item] ChecKEY Key-Locking Forgetfulness Prevention [Product Description] This product prevents you from forgetting to lock your door, and is compatible with keys made by MIWA Lock. When you lock the door, the color of the display window changes, allowing you to easily check if you've locked up after you leave. Made in Japan ・Prevents forgetting to lock the door, and allows you to confirm if the door is locked by the color of the display window. ・Can be used with keys with the MIWA stamp. ・Ideal for the elderly, children, and those living alone. ※Some key types may not be compatible. Please check the images before purchasing. Although it is an unused item, it has been stored at home. We appreciate your understanding, and we ask that those who are not concerned about minor details purchase this item. #ChecKEY #KeyLockingForgetfulness #Key #MIWALock