Item Type: Stylus Pen Material: Aluminum Alloy BT Version: 4.0 Pressure Sensitivity Level: 4096 Level Color: Silver Gray Battery Type: AAAA Alkaline Battery (Battery Not Included) Application: For Lenovo IdeaPad forFlex 5 15 (for Intel) 1、Tilt Induction: Stylus pen natural sketching and painting, tilt induction, 4096 level pressure sensitivity, tapered nib and naught strokes, all designed for natural writing, effective sketching and painting without lag.  2、Multi Function: Stylus pen multi function operation, BT pairing, pen tip extension, pen barrel material improvement, button function customization, touch improvement.  3、Seamless Switching: Capacitive stylus can seamlessly switch between different applications through one of the three configurable shortcut buttons on the side and top of the pen, which can be customized through the pen function for Windows and the pen application.  4、Custom Function: The button function on the top needs to be activated after BT connection, and you can customize the function and the operation of some combination keys. You can go to download the for lenovo pen setting application software to adjust this pen and set the shortcut keys.  5、Shortcut Function: The two configurable buttons of the Capacitive pen are used for shortcut functions, and accident proof clicks can minimize errors.