Yes, there is a lock-in period depending on the term that you have chosen.
Cash+ Guaranteed SGD currently offers 1 month, 3 months, 6 months and 12 months.
Cash+ Guaranteed USD currently offers 1 month only.
If the maturity date of the investment falls on a non-business day, your investment will instead end on the next business day. Pro-rated returns will be earned on the additional days.