This kits comes with four Blue-Bots. Blue-Bot is a simple robot that can operate on its own or via Bluetooth controlled by an Android, iOS, Mac, or Windows device or a tactile reader. Blue-Bot is transparent so that kids can see all of the parts that make it work. It can now interact with other Blue-Bots too! Audio record and playback functionality are added in the newer version. Teachers can use Blue-Bot to help teach Pre-K through second-grade kids logic and sequential thinking.