Universal stylus pen Pen Tip1.45mm Elastic Thin Fiber (Pressure-Sensitive) MaterialDiamond-Cut Aluminum Alloy (White Finish) Length145mm Charging PortUSB Type-C BatteryLithium-Ion (Capacity not specified) Charging Time≈1 Hour Usage TimeUp to 12 Hours (Fully Charged) Indicator Lights– Charging: Red LED – Fully Charged: Green LED CompatibilityTouchscreens: iPad (2018+ models with magnetic support), Android Tablets, Microsoft Surface, and Most Capacitive Screens Primary Use CasesNote-Taking, Drawing, Design.