The RVR+ Multi-Pack brings Sphero’s revolutionary take on the programmable robot to the entire class with 6 RVR+ robots and RVR+ Educator Guide. They’re drivable right out of the box packed with a diverse suite of sensors and built for customization. RVR+ is expandable and made for novice to advanced programmers in 6th–12th grades. RVR+ is a mobile platform for beginner to advanced hackers makers educators and learners. Compatible with: Apple Android Kindle Windows and Crome. Other than 6 RVR+ mobile robots tech specifications include: Removable cover plate and expansion plate with quick-release buttonRemovable protective roll cageRemovable and rechargeable batteryUniversal 4-Pin Expansion Port to connect third-party hardware5V 2.1A USB-A onboard connectivity to power your projectsCompatible and programmable with the Sphero Edu appCompatible with Sphero Public SDK