It is a co-branded card of SMRT and Citi, but this card also offers excellent rebates. You can get 15% savings in all your favourite coffee shops like Starbucks, Coffee bean & Tea leaf, Coffee club, The Connoisseur Concerto (TCC).
Sounds too good right? Here's the catch. You have to spend a minimum of $600 every month on this card for the high rebates. Else, you get only 0.3% rebate. You will get 5% SMRT$ for transactions of $50 or more and only 3 SMRT$ for transactions less than $50.
This card was created for using in public transport specifically, although other cards can still do this.