I received this item from Amazon by mistake, and they told me I didn't need to return it. It's new and unopened. The warranty (30 days) has expired, so I've removed the warranty card. Here's the product description from Amazon: ↓↓ This is an ultra-compact, keychain-style pocket watch. It uses a Japanese quartz movement and a replaceable battery, so you can use it with confidence. It's a cute design that looks great on women's bags, purses, and wallets. It can also be used as a nurse's watch. It's perfect for people who don't want to wear a wristwatch or who can't wear one due to a metal allergy, as it allows you to check the time easily.