Stylus in an ergonomic triangular jumbo pencil shape which provides a very natural writing and drawing experience on all compatible devices with EMR Technology No empty batteries or annoying cables: The stylus does not need a battery and so never needs to be charged. It does not need to be paired with your device or require a driver to be installed IMPORTANT: Please check the compatible devices listed in the PDF "Compatibility Guide (PDF)" which you can find under the " Product guides and documents ". Noris digital is not compatible with Apple devices Palm Rejection: Thanks to the enhanced EMR technology just the tip of the pencil is recognized and the palm of your hand will be ignored 4,096 pressure levels: The line width is adjustable depending on the pressure when writing/drawing