Specifications Type:Active Stylus Hign-concerned Chemical:None Compatible Material:Plastic Origin:Mainland China Universal Compatibility: Stylus has the latest capacitive technology ensuring our product is widely compatible with most touch screen compatible with most capacitive touch screen devices,including for All iPad (2018 after) .Suitable for Samsung phones, Apple phones, Huawei phones, Xiaomi phones and other Android phones.NO PRESSURE SENSITIVITY. General model disconnection issues and precautions : 1. Tablet devices and pens cannot be used while charging. 2. The tempered film on the flat plate is too thick and affects the sensing. We are equipped with a piercing pen tip, and the instruction manual also clearly states this kind of clearance. If the contact is insensitive, a penetrating pen tip can be used. 3. The device has been connected to other capacitive pens and needs to be disconnected. You must open other capacitive pens before you can connect a new capacitive pen. Our manual has relevant instructions. 4. During use of the capacitive pen, your hands cannot touch the screen. The touch screen cannot be used (the manual has relevant instructions), or use an anti-accidental touch finger. set.