So this is actually a really special keychain that projects your favorite photo! You can upload a clear picture of your pet, family member, or anyone important to you, and it gets engraved inside this beautiful sterling silver pendant. The projection works best in darker environments with a white background - it's pretty cool technology! The whole keychain is about 2.1 inches long, made with S925 sterling silver that's lead-free and nickel-free, so it won't turn your skin green or cause allergies. The key ring itself is stainless steel, making it durable for everyday use. Every time you grab your keys, you'll be reminded of your special someone. It makes an incredibly meaningful gift for pet lovers who want to memorialize their furry friends, or for anyone who wants to keep their loved ones close. You can even wear it as a necklace if you prefer. If you have any issues, the company is really good about helping out - just shoot them an email.