Echolocation

You have developed the ability to use sound to see, usually out of necessity. 

• As an action, you can gain blindsight in a 60 feet long cone centered on you. This blindsight lasts until the start of your next turn (6 seconds). 
  If you are permanently blind, the range of the cone becomes 120 feet instead.
• You can also use a bonus action to gain blindsight with a range of 10 feet until the start of your next turn (6 seconds).
  If you are permanently blind, you can use this feature as a free action, and the range becomes 20 feet instead of 10.

You can only take these two actions as long as you can both speak and hear.

You also have advantage on wisdom (perception) checks that rely on hearing.