Good to know - Start typing in comfort - the ergonomic wave shape of this keyboard helps your fingers, wrists and arms stay fresh during long working days - Made of three layers of memory foam, its cushioned palm rest will keep your hands supported - Connect wirelessly with a USB receiver or Bluetooth - the keyboard is compatible with pretty much any computer, phone or tablet - You don't have to worry about power - the included AAA batteries are good for up to 3 years - Just pop it in your backpack and type on the go - the compact design makes it easy to carry it around