[Practical] The stylus actually feels and writes like a pen, does not require special software and works with any iOS and most Android touch interface devices. - [Long battery life] 180mm long, 8.9mm diameter and 11.5mm tip, the active stylus feels like a real pen. Powered by a built-in battery, this active stylus provides up to 12 hours of continuous, non-delayed drawing and writing. Note: The charging voltage and current should not exceed 5v 1A If iPad users use this product, please turn off the "Only Draw with Apple Pencil" function first; - [Easy to use] It can be activated immediately via a switch button and can be operated on any device by capacitive touch. - [Applicable Programs] The active stylus is independent of the special software or special settings in the application. So it works for almost any application, including popular applications like ZoomNotes, Evernote, FiftyThree, ProCreate. Specification: Size: nib 1.5mm x pen diameter 8.9mm x total length 180mm Material: pen body aluminum (pure copper pen tip, pen tip with protective film does not hurt the screen) Compatible use: for Android phones, for Apple phones, for ipad Pro,all brands of flat-panel capacitive screen devices. Packing list: 1 x Stylus Pen 1 x USB cable