N-trig Active Pen (Pink) Self powered pressure sensitive active pen Feels like pen-on-paper with optimized tip friction on screen Accurate & precise, no missing ink strokes Palm rejection for natural writing position on screen Right click & erase buttons Manufacturers 1-year warranty NOTE - This product is compatible ONLY with the following devices: Microsoft Surface Pro 3, Sony VAIO Duo 11/13, VAIO Tap 11, VAIO FIT Family, Acer Aspire  R7 572, ASUS Taichi 21/31 and Fujitsu Stylistic Q702