What you get---There are five colors to choose from: white, pink, light green, blue, purple; Button batteries are included so that you can use them directly; It also comes with detailed instructions so that everyone can understand how to operate; Size detail---each digital pet keychain measures approx. 2.2 x 1.8 x 0.5 inch/ 5.5 x 4.5 x 1.2 cm; Each retro handheld game machine is equipped with a key chain, which can be carried anywhere and anytime Easy operation---each virtual electronic digital pets machine has 4 buttons, namely reset, select, decide and cancel, which is easy to operate; Pull out the tab at the back, just select a pet, set the time, select a name you like, and then you can get started easily Attention---please take out the spacer at the back before you use; Insert the spacer back into the back after use, preventing waste of electricity Wide Range of Usage---the electronic digital pet keychain is suitable as birthday party favors, Christmas stocking stuffers, you can also use it as a reward to student to encourage student; In some way it is a decor to adorn your items, too