Technical specifications :-

Physical dimensions: 148.7 x 84.7 x 28.9 mm (5.85 x 3.33 x 1.13 inches).
  Screens: Two separate 3-inch TFT LCD, resolution of 256 x 192 pixels, dimensions of 62 x 46 mm and 77 mm diagonal, and a dot pitch of 0.24 mm. The gap between the screens is approximately 21 mm. The lowermost display of the Nintendo DS is overlaid with a resistive touchscreen, which registers pressure from one point on the screen at a time, averaging multiple points of contact if necessary.
  CPUs: Two ARM processors, an ARM946E-S main CPU and ARM7TDMI co-processor at clock speeds of 67 MHz and 33 MHz respectively. The ARM946E-S CPU processes 3D rendering and the ARM7TDMI processes 2D rendering for DS games and Gameboy Advance gameplay.
  RAM: 4 MB of Mobile RAM
  Voltage: 1.65 volts required
  Storage: 256 kB of Serial Flash Memory
  Wireless: 802.11 + Nintendo Original Protocol
  Wi-Fi: Built-in 802.11 Wireless Network Connection (802.11b/g compatible with WEP encryption support only)