FAQs: Q1: Does the digital pen have or need a battery? A1: No. Thanks to the EMR technology, TiMOVO EMR digital stylus works inductively with the energy from the end device and doesnt require tiresome charging. Q2: Do I need to install a driver or software to use the pen on devices with EMR technology? A2: No. So long as the WACOM EMR technology is built into a devices display, you're ready to use it. Q3: Can the stylus also be used on Apple devices and Pixelbooks? A3: No. These devices use a different display technology, not the EMR technology. Therefore, they are not compatible with our EMR digital stylus. Convenient Eraser Function You can easily erase the lines and handwriting with the digital eraser on the end of the pen. Portable Pen Clip Prevents pen from rolling off the desk or getting lost.