It is normally abbreviated with the dollar sign $, or S$ to distinguish it from other dollar-denominated currencies. It is divided into 100 cents.

As of 2019, the Singapore dollar is the 13th-most traded currency in the world by value and the most traded currency in Southeast Asia. Apart from its use in Singapore, the Singapore dollar is also accepted as customary tender in Brunei according to the Currency Interchangeability Agreement between the Monetary Authority of Singapore and the Autoriti Monetari Brunei Darussalam (Monetary Authority of Brunei Darussalam).

The Brunei Dollar is pegged to the Singapore dollar at an exchange rate of 1:1, and this currency is accepted as a “customary tender”, but not a legal tender in the other country and vice versa.

Singapore’s foreign reserves officially stood at over US$260.7 billion, as of April 2017 according to the MAS.

Up to now, Singapore currency has undergone 3 series of coins and 4 series of banknotes. The latest series of banknotes is the Portrait Series, launched in 1999. These series feature the face of Yusof bin Ishak, the first president of the Republic of Singapore, on the obverse, and the reverse depicts a feature of civic virtue.

According to Wikipedia.