Review on Lenovo USI Stylus Pen for Chromebook - 4,096 Pressure Sensitivity Levels, 150-Day Battery Life, Chrome OS Support, AAAA Battery - GX81B10212 by Derek Wagner

Despite advertising that it's compatible with the Lenovo Chromebook Duet, it doesn't work. At least it works, but it's so bad it's almost unusable. Hovering the stylus an inch above the screen activates touch. The onscreen buttons are unusable and trying to type requires the dexterity of a marvel superhero and a Zen Buddhist saint in the air. Warning: I don't have any other Lenovo touchscreen laptops, so I can't comment on its ease of use (or its staggering lack of it) on anything other than the Duet.