Fully compatible with Apple/Android tablets, learning machines and mobile phones, new and old devices can be used immediately upon connection.It adopts intelligent pressure-sensing chip technology, accurately identifying the pressure levels on the screen. The 1.5mm ultra-fine fiber pen tip (with 2 sets of replacement pen tips included) achieves pixel-level precision, combined with tilt sensing technology to reproduce the true pen stroke effect. Military-grade durability + Humanized design Innovative detachable pen tip structure, passed 500,000 times of wear resistance test without damaging the screen..syi