【aosu•OAS】Specification : 100% Brand new and high quality Item Name : Mini Biscuits key buckle Calculator Compatible : for everyone, home, office, student Function : Slim Card Design, easy to carry, easy to play Material : Plastic Size : About 5.5 x 3.8 cm Powered By : 1 x Button Cell Battery(included) Color : Random Product Features : 1. Compact and light weight, portable and Convenience. 2. Cute ultra-thin calculator with button battery. 3. With modern design, easy to carry and practical to use. Package Included: 1 x Pocket Calculator