Features: No Pairing Required & Smart Standby - Charge the USI 2.0 for 10 minutes before use, and it will wake up automatically when picked up, no Bluetooth or app needed. With USB-C fast charging, just 1 hour of charge provides 110 hours of use. The LED light operates as follows: the red light blinks during charging or when the battery is low, the green light stays on when fully charged, and the green light illuminates for 3 seconds before turning off when powering on via the pen button. Auto Sleep Function - The stylus enters sleep mode after 5 minutes of inactivity and can be woken up by pressing any button. If it remains inactive for 45 minutes, it will shut down and must be restarted by pressing the power button. Durable Cone-Shaped Tip & Comfortable Grip - The USI 2.0 features a cone-shaped tip for durability and strong signal transmission, with easy replacement if needed. Its rounded body offers a comfortable, fatigue-free grip, ideal for note-taking or sketching. 4096 Levels of Pressure Sensitivity - With 4096 levels of pressure sensitivity, the USI 2.0 provides precise control and responsiveness, making it perfect for sketching, note-taking, and detailed artwork. Palm Rejection and Magnetic Attachment - Write or draw without worrying about palm marks on the screen. The magnetic design allows you to attach the stylus to your Chromebook for easy carrying and storage. Note: Not all Chromebooks support magnetic attachment. Wide Compatibility - The USI 2.0 stylus is compatible with Amazon Fire Max 11, Fire HD 10 (2023 release), Google Pixel Tablet, Lenovo Duet, HP Chromebook 360, ASUS Chromebook Flip, and more.