My take on a 3D printed ECHO Device : r/borderlands3
Borderlands Phone Cases - iPhone and Android | TeePublic
Borderlands Raspberry Pi : 9 Steps (with Pictures) - Instructables
At the beginning of Borderlands 3, Claptrap says that the original ECHO-2 communicators were recalled and rebranded as grenades due to spontaneously exploding. Sure enough, the ECHO-2 can be found and equipped