Amazon.com: Lenovo USI Stylus Pen, Chrome OS Support, 4,096 Levels of Pressure Sensitivity, 150 Days Battery Life, AAAA Battery, Works with Chromebook, GX81B10212 : Electronics
Amazon.com: Lenovo Digital Pen 2 (Laptop) - Ultra-Tactile Response - 4,096 Levels of Pressure - Natural Feel Elastometer Pen Tip - Extended Battery Life - Silver : Electronics