Do not throw ECHO-2 Do not hold ECHO-2 close to face. Do not look directly at ECHO-2. – Damage, radius and fuse time are based on how the character interacts with it.
Usage & Description
Looking at the grenade when it lands decreases its damage.
The ECHO-2 will register as being looked at when it enters the character's field of view. Looking at the grenade after it lands while aiming down sights further decreases its damage and radius and increases the fuse time.
The ECHO-2 can be obtained from a Tinks Hijinx slot machine when a legendary grenade mod is won.
The ECHO-2 is a callback to the beginning of the game when Claptrap gives the Vault Hunters their ECHO-3 and explains that they rebranded the prior model as grenades due to their explosive nature.