HUION Battery-Free Stylus PW507 Combined the 8192 levels of Pen Pressure with the 266PPS Highest Report Rate Compatible with KAMVAS PRO 12, PRO 13, PRO 16: Amazon.co.uk: Computers & Accessories
PW517 Battery-free Pen - HUION
Huion Battery-Free Pen PW100 for Drawing Tablets | Huion Official Store: Drawing Tablets, Pen Tablets, Pen Display, Led Light Pad