【Great Feature】Built-in battery provides 8 hours active use while it's fully charged with Micro USB in 60 minutes.Smart Saver,auto shutdown after 30 mintues for safety.Charging input is 5V.【About Active Stylus】Fine, Light, Brief stylish design with 178mm length, 16.8g weight, 1.5mm tip for smoothly writing and drawing. More sensitive with long time wearing at best performance.Best Stylus for artist,journalist,teacher and students etc.【Stylus Pens for Touch Screen Devices】 Our rechargeable active stylus pens are specially design for most touch screen devices including: iPad /iPad 2/new iPad 3/iPad4/iPad Pro/iPad Mini/ iPad Mini 2/iPad Mini 3 /iPad Mini 4 and other most popular tablets, smartphones.【Precise Point Control】 These digital stylus pens is sensitive to pressure and tilt, so you can easily vary line weight, create subtle shading, it makes your iPad Pro even more powerful and can help you be more creative.【User-Friendly Design】This iPad Pencil can be written directly on iPad or iPhone, just pressing the button once (Blue light on) and you can draw or write on your touch screen devices. No USB or Bluetooth required. Please notice that this pen has NO Bluetooth function.