BenQ PT03 stylus pen 16.8 g BlackBoard Essential pens for RE04 Interactive display pens PT03 Purpose built for the BenQ Board Essential 04 series, the PT03 pen features dual sized tips, offers one color for each tip in dual pen mode, is easy to store, and never requires batteries so you can write without worry. Dual color collaboration The PT03 pen is designed to work with the dual pen mode in EZWrite. This lets you write in two different colors, depending on which tip of the pen