Mike and Speaker all-in-one! New concept portable mike system Realizing the freedom of wireless microphone and the stability of wired microphone Micker has evolved Micker Pro with various requirements from the field Micker is optimized for classroom and lecture room environment and good to use for any internal and external activity of group meeting, such as academic institute, kinder garden, conference room, church and seminar, etc Patended Technology: exclusive dual speaker provides convenient and stable quality of sound with no directional loss inside classroom environment, and provides various options including howling suppressor technology through all-in-one mike structure that can be used for lecture debates at indoors and outdoors (3-level volume adjustment, external device player, internal charging circuit, charging unit, echo, buzzer)