Great Tremor: Heavy Pressure is a Teigu in the form of a microphone. It was owned by Cosmina and is now owned by the Revolutionary Army. It was later used by another female bunny eared soldier during the final battle against Esdeath.
Heavy Pressure is a microphone-type Teigu that can amplify the user's voice and turn it into ultrasonic waves capable of pulverizing the enemy by shattering their bones.
It seemed to have different output levels; with full power output presumably being its trump card.
Similar to the other Teigu, Heavy Pressure possess its own unique theme when selecting its user's. With Cosmina and the Female Revolutionary Army Soldier both possessing the same energetic,quirky personality and a penchant for bunny ears.