The COLOR RED Apple pen is compatible with (2018-2022) Apple iPad Pro 11/12.9inch-1st/2nd/3rd/4th/5th Gen ,iPad 6/7/8/9th Gen, iPad Air 3rd/4th/5th Gen, iPad Mini 5/6th Gen. White pen shown is example only NOTE: Stylus pen is NOT compatible with iPad devices prior to 2018. NO iPhones It MAY BE compatible with Android/Microsoft devices. Each model pen is different - new sealed pen so can't open to test. High Precision & Tilt Sensitivity. ipad pen uses a high-precision tip to improve its precision, write without any delay. You can draw lines of different thicknesses by changing the tilt angle 15°-90° of the stylus pen without losing any lines or details, & the drawn pictures are real Palm Rejection & Smart Switch. The ipad stylus pen with palm rejection technology provides a natural writing feeling. You can put your palm on the iPad screen without wearing gloves, writing, drawing comfortably. No Bluetooth connection required, just tap the top of the stylus pen to turn it off/o