What is Singapore’s “green card”? What are the benefits?

The green card was actually the permanent resident certificate of the United States. Because it was green, it was called "green card". Later, the permanent residence certificates of other countries were also called green cards.

Singapore's green card means that the holder has the right to permanently reside in Singapore, as well as all rights and benefits except for all political rights of citizens such as voting and being elected, including military service for the country