Product features: Creates a fun learning environment Color coded to help kid better learning High-quality rubber membrane key switches Responsive touch for speed and comfort Easy and simple use Port: PS2/USB System requirement: Microsoft Windows 2000/XP/Vista Media Player 6.0/7.0 version or above IE 4.0 version or above Outlook 4.0 version or above Specifications: Operating temperature: 0 to +50 degree Celsius Storage temperature: -22 to +65 degree Celsius Operating humidity: 20% to 90% RH Power consumption: +5V DC + 5% Operating force: 50 + 10gm Peak force: 55 ± 7g Total travel: 2.5 + 1mm Compatibility: USB/PS2 Switch mechanism: membrane Dimension: 480 x 180 x 22mm Weight: 710g