More features:
Power: Many are rechargeable, with built-in batteries that can last for several hours and are often charged via USB-C. Some models are non-powered passive styluses that do not require charging.
Features: Can include a clip for easy carrying, a 2-in-1 design with a ballpoint pen on the opposite end, and sometimes an LED power indicator.
Usage: Does not require special software or Bluetooth connection for most basic functions on supported devices. You simply turn it on (if it's an active stylus) and use it.