Oh, dear. You can
certainly do better than that, even if you're going to violate all conventional advice about age appropriate, prudent investing. I suppose we should thank you and others like you for subsidizing Singapore's still low mortgage interest rates, but wow.
It looks like, best case, your Standard Chartered e$aver Savings Account would yield 1.60% (I assume that's what you mean by "esaver"), and that's if you greatly exceed the current deposit insurance limit in Singapore. How about
Singapore Savings Bonds, which start off at 1.74% currently and rise from there? SSBs are 100% government guaranteed, and you can accumulate up to $100,000 of them. (It'll probably take about 3 monthly purchases to do that since SSBs are typically oversubscribed to some degree.)
The Singapore government's T-bill is currently yielding 1.78%, also 100% government guaranteed. The next T-bill will be auctioned next month (October, 2018) and will have the issue code BY18103Z. A T-bill is analogous to a 12 month fixed deposit, but with an unlimited government guarantee.
CIMB is currently offering 1.84% on a 12 month fixed deposit of $10,000 or more, assuming you open it online which is easy enough to do. State Bank of India pushes that up to 1.85% for a $100,000 fixed deposit for 12 months, and they'll offer even more if you're willing to go 24 months.