Metapen Surface Pen

M1, M2, M2 BIZ and M3 PRO use Microsoft Pen Protocol for Surface devices. M1 delivers 1,024 pressure levels with 300-hour battery life. M2 and M3 PRO raise response to 4,096 levels, adding tilt shading and flip-tail eraser on M2 and soft tip gestures on M3 PRO.