Used for about 2 years. One set of stickers has been used, so only one set remains. All other parts are shown in the photos. I believe there are no missing items, so please check. The batteries used are built into the main unit. Since there is no low battery warning, I think they still have a decent amount of charge. 【Product Overview】 Qrio Lock is a product known as a pioneer in smart locks. It's an ideal choice for enhancing home security. 【Included Items】 Four new CR123A batteries are included and ready to use. Also included are the instruction manual and the screws needed for installation. 【Convenient Features】 One set of stickers is included for easy installation. By linking with your smartphone, remote operation and access management are possible. - Brand: Qrio - Product Name: Qrio Lock - Included Items: 4 new batteries - Contents: 1 set of stickers, instruction manual, screws - Battery Type: CR123A - Number of Batteries: 4 Thank you for viewing.