The key features of fixed income investments include:

1. Regular Interest Payments: The borrower pays periodic interest payments to the investor at a fixed rate, usually semi-annually or annually.


2. Fixed Maturity: Fixed income investments have a specified maturity date, at which the borrower is obligated to repay the principal amount to the investor.


3. Lower Risk: These investments are generally considered less risky than equity investments, as the interest payments and return of principal are predetermined and more predictable.

Common types of fixed income investments include:

1. Bonds: Debt securities issued by governments, municipalities, or corporations, with fixed interest payments and a specified maturity date.


2. Certificates of Deposit (CDs): Time deposits offered by banks with a fixed interest rate and maturity period.


3. Treasury Securities: Bonds issued by governments, such as U.S. Treasury bonds, notes, and bills.


4. Corporate Bonds: Bonds issued by corporations to raise capital, with fixed interest payments and maturity.


5. Fixed Income Mutual Funds: Funds that invest in a portfolio of fixed income securities, managed by professional fund managers.

Fixed income investments are favored by conservative investors seeking a steady stream of income and more stable returns compared to the potentially higher but riskier returns offered by equity investments. However, it's essential to consider inflation and interest rate fluctuations, as they can impact the real returns of fixed income investments.