Upgraded copper pen head, smooth and flexible to use, no harm to screen One-button control, easy operation High-quality pen point, sensitive to touch, accurate and smooth writing Smart power off, If it is not used for 30 minutes, it will automatically power off Powerful battery life: charging for 1 hour, continuous use for 12 hours, standby time can reach 30 days Specification: Brand: Joyroom Model: JR-K811 Product Process: CNC Piano Paint Product diameter: 9mm Tip diameter: 1.5mm Product length: 173mm Applicable models: all capacitive screens (LED OLED) Charging time: 60-80 minutes Working time: 10 hours Effective distance: 1.6mm from the pen tip Battery: lithium polymer battery, 140mah Voltage and current: 5V or 0.2A Charging interface: Micro USB Compatible with: All Android or iOS smart touch capacitive screen devices Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.