What is the fine-grained topic of the following text: It ships with Android 4.3, which gives you three major new features: Restricted User Profiles allows you to add a kid- friendly profile; OpenGL ES 3.0 improves polygonal graphics performance; and Bluetooth Smart allows the Nexus 7 to connect to a newer generation of Bluetooth devices. Only return the topic.
New features of Android 4.3 on Nexus 7