The Glow In The Dark Counting Coin Bank by Deworld is as described on the product description page. First thing I did was unbox and insert 2 AAA batteries (not included) into the lid. It does need to be opened and locked with a tiny phillips screw driver. This will add or take away from the total coin count. It automatically adds the change because of the size. If you put in a bill by unscrewing the lid, you can physically push the + button on the front to add the amount to what the screen previously said. Same with borrowing from the bank, there is a minus button. A fun way to see what happens to all of your money and nice idea if you are just putting away spare change to see how fast it grows or if you are saving money to purchase something special. A fun way to save or keep track of your money. It will also glow Neon in the dark if it is exposed to sunlight for a while during the day. Great present for anyone, but especially kids that can do simple adding and subtracting. I received this bank at a discount for my review.