✓No Pairing Required - Please charge USI 2.0 for 10 minutes before first use. Penoval USI 2.0 wakes up from sleep from picking it up. No on/off button. No need to connect Bluetooth, or any applictions. USI 2.0 will auto turn off in 5 minutes of inactivity. ✓ 4096 PRESSURE POINTS - Use our stylus pen for touch screens to precisely sketch and shade with 4,096 pressure points that respond to the lightest touch. Create your masterpiece with high accuracy and great details. ***What's in the box? 1x USI2.0 Pencil, 1x Replacement Nib, 1x Type-C Cable, and a User Manual. Please contact us if you have questions about product compatibility. ✓ STURDY CONE-LIKE TIP - Our unique cone-like design solves an annoying problem for most users — unstable writing. Our stylus pen is also wear-resistant and easy to replace if you break it. Overall, it is a more streamlined design for users. ✓ MAGNETIC ABSORPTION & PALM REJECTION TECHNOLOGY - Using our stylus, you can write or draw smoothly having your palm on the touch screen and never worry about leaving any stray marks. Our customers, especially stylists, love this and the magnetic absorption, as this dramatically improves their writing experiences compared to other styluses. ***Note : Not all chromebooks support magnetic absorption. ✓ TYPE-C FAST CHARGING & ALUMINUM ALLOY - Compared to the previous version of USI, this recharging model makes it more environmentally friendly & reusable. Up to 90 hours of usage time when you charge it for 50 mins. The stylus pen is made of aluminum alloy, making it sturdy and long-lasting. Not all Chromebooks supports USI 2.0 Stylus. It’s only for certain Lenovo, Acer, HP, ASUS model. Please check the compatible list in on .?How to find your model number? 1 Check on the packaging when your Chromebook arrived. 2 Check the bottom of your Chromebook. Most Chromebooks come with model number printed on the back or on a sticker. 3 Check the shopping history on the platform you have purchased your Chromebook. ✓ WIDELY COMPATIBLE - The Penoval USI 2.0 stylus pen is compatible with some SPECIFIC Chromebook Model. Please check the model list in the description to ensure compatibility. Some commonly compatible models include Fire Max 11, Google Pixel Tablet, Lenovo Duet, and more, which are listed in the compatibility section.