1With 256 levels of pressure sensitivity and for Palm Block technology, users can freely adjust the writing intensity. 2Builtin replaceable alkaline battery, 800mAh large capacity, convenient for your long time writing. 3Stable wireless Bluetooth connection, only needs to be set once, which is convenient to use. 4Aluminum alloy composite material, delicate hand touch, rugged and durable for longterm use. 5Compact size, lightweight and portable, this stylus pen is easy to carry and store. Item Type: Stylus Pen Material: Aluminum Alloy Composite Material Color: Silver Bluetooth: 4.0 Pressure Sensitivity: 256 levels Battery: Alkaline Battery (built-in), Capacity: 800mAh How to Use: 1. Take out the touch pen, press and hold the purple button on the top for 10 seconds, and find the Bluetooth device in the system settings after the yellow light flashes, click on the match to use 2. After matching, click the purple button to call up OneNote, and quickly click to call up the OneNote quick screenshot function 3. The upper part is the right button, which can realize the function of the right mouse button 4. The lower part is the eraser and delete button, which can realize the eraser and delete function in the supported system. 1 x Stylus Pen