The Nintendo DS is a handheld console designed to play proprietary game cards similar to SD cards. It introduced several innovations to the handheld gaming market including the use of dual screens, a touchscreen, and a built-in mic. Its launch marked the start of the seventh generation of videogame consoles. It uses a D-pad, seven face buttons including a power button, and two shoulder buttons. It is capable of playing most Game Boy Advance cartridges via a secondary slot, and it includes local wireless and WiFi connectivity.