Lenovo Duet Chromebook: HP USI Stylus & Pen Features Tested - YouTube
Amazon.com: Pencil Stylus for Lenovo Chromebook Duet 3/5 Pen,Minilabo Touch Screens Active Stylus Digital Pen with 1.5mm Ultra Fine Tip Stylist Pen for Lenovo Chromebook Duet 3/5 Drawing and Writing Pencil,Pink :
Lenovo Duet 5 Detachable 2 in 1 Chromebook | Lenovo US