What is samsung s21 ultra s pen?

Samsung S21 Ultra features an S Pen, which is a stylus that allows for more precision and control when navigating on the device. The S Pen is an optional accessory that must be purchased separately from the phone. The S Pen on the Samsung S21 Ultra is similar to the ones that come with Samsung's Note series smartphones. The S Pen can be used to take notes, draw and sketch, sign documents, and navigate on the device. The S Pen for the Samsung S21 Ultra has a latency of just 9ms, which means there is almost no lag between the stylus and the screen as you are writing or drawing. The S Pen for the Samsung S21 Ultra can be magnetically attached to the back of the phone or stored in the optional case that is designed to hold the S Pen.