Number of Ports: Multiple USB ports for charging various devices simultaneously.
Output Power: The total output power and distribution among the ports.
Fast Charging: Support for fast-charging technologies to charge devices quickly.
Compatibility: Designed to work with various devices, including smartphones, tablets, GPS units, and other USB-powered devices.
Design: Compact and convenient design for use in cars, often with a power indicator.
Safety Features: Overcurrent protection, overvoltage protection, and other safety features.
Input Voltage: Compatibility with the standard voltage in cars, typically 12V.