Product Name:Acase Active stylus Pen USB Charging Type Character: 1.Rotate pan nib to adjust sensitivity of stylus for different tablet or smartphone with different capacitive screen. 2.Idle for 3 minutes automatically shut down 3.Only switch on,without Bluetooth connecting or download software,more easy to use. 4. Power: USB charging 5. Package:Retail include stylus case and USB cable 6. Colors: Silver, Black White Acase active stylus pen compatible with more capacitive screen devices(ios or Android), if you change the device, and it is not sensitive, just rotate the pen nib to adjust it. Its fluent and accurate to writing or drawing pictures on tablet, click small icon on smartphone. Acase Sense Active Stylus Pen redefines stylus pen. It feels just like a ball pen when writing on a tablet and smartphone. The product does not require any specific apps, and works with iOS devices and most Andorid/Windows devices. Featured 2mm fine point, super thin and durable, provides fluid pin-point writing and accuracy. Powered up to 10~12 hours continually usage. The smart control technology makes it go into sleeping mode after 3 minutes idle time.