Battery-free pen with 8192 levels of pressure sensitivity, does not need to be charged, allowing for constant uninterrupted drawing and playing Easy to operate, whether you are a novice or veteran, the S640 lets you show the better performance in the drawing. Start creating your next stand-out project As a professional drawing tablet, the VEIKK S640 drawing pen tablet will never let you down Using the 4 x 6 inch screen, it could give you more inspiration. 8192-level high-pressure sensitivity makes you draw the smoother line ?With 230 RPS tracking speed ensures even the lightest and fastest pen strokes are accurately captured, make sure that the original handwriting could be showed perfectly Adopt high-quality screen, 4 x 6 inch large size delivers brilliant colors. 5080LPI resolution makes the image more vivid, ensures the color's accuracy Specification:? Active area: 4 x 6 inch Pressure sensitivity: 8192 levels Report rate: 230 RPS Resolution: 5080LPI? Interface: Micro USB Induction height: 10mm Thickness: 2mm Type: Pen without power? Pressure Sensitivity: 8192? Resolution: 5080LPI? Read Speed: 230 point/s