Warm Tip: 1.This stylus pen has NO Bluetooth function and does NOT support “palm rejection”. Please make sure your hand is not on the screen. NO pressure or tilt sensitivity. 2.Generally, there is no scratch on the touch screen, but we still recommend that you use a screen saver on your device to protect the screen from any possible damage / scratches caused by dirt on the disk / screen, tip damage or low probability defective products. 3.NOT compatible with Microsoft windows system device. Smooth Writing & Delicate Strokes: The fine nib is made of superfine elastic copper tip, provides a smooth writing experience and delicate strokes, which friendly-interaction could keep away from scratches. One-click Operation: One-click operation without bluetooth link or any app connection required. Design of Loss Resistant Magnetic Cap: The stylus cap adopts magnetic design to prevent loss. Most Compatibility: Our active stylus pen is widely used for all capacitive touch screen devices, compatible with iOS devices as well, including compatible with iPad Pro compatible with iPad Mini compatible with iPad Air compatible with iPhone 11/Pro/Pro max compatible with iPhone X compatible with iPhone 8/8 Plus compatible with iPhone 7/7 Plus compatible with iPhone 6s/6s Plus compatible with iPhone 5/5s/5 SE compatible with iPhone 4/4s. (Note: NOT compatible with Microsoft windows system device.