This article contains spoilers from the most recent DCEU film. You have been warned.
The Bracelets of Submission, also known as the "Bulletproof Bracelets", are a pair of indestructible arm enclosing vambraces. They are worn by Wonder Woman on her wrists and are able to deflect almost all incoming melee and ranged attacks. They can also be smashed against each other to create a shockwave strong enough to knock back beings as strong as Doomsday.
The Bracelets of Submission, much like Wonder Woman's shield, are virtually indestructible (although both show signs minor damage), capable of deflecting even a tremendously powerful and destructive thermal attack from the monster Doomsday, creating a massive wave of energy outwards. In addition to deflecting energy, the bracelets are capable of absorbing energy as well.