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[Pseudo multi-tone silencer] This is a baffled type silencer in which high-pressure gas injected from the muzzle passes through the panel layer, consumes energy in stages, expands in stages, forms a vortex, and decelerates toward the tip. It can be drained to lower pressure and reduce noise. [Singing passionately at home] Vocal training, solo karaoke. This soundproof mask is recommended for those who are concerned about sound leaking to their surroundings. [Voice practice] If you practice your voice at home, you won't have to worry about your neighbors' complaints anymore. Please practice slowly at home. Recommended for singing and voice training. This model has excellent sound insulation properties. [Release your emotions] If you feel stressed, you can release it anywhere. You don't have to worry about affecting others. You can also scream into the bottle. [Multi-purpose] Not only can it be used as a silencer bottle, but also for DIY painting, and can also be used as a vase in your free time. Soundproof Bottle Scream Pot Soundproof Sound Trainer Mouth Pot to Reduce Stress and Release Emotions, Family Karaoke without Sound Leakage, Pressure Karaoke Sound Trainer Voice Training Soundproof Mask Professional Single Use Karaoke Soundproofing Supplies Karaoke Home Use Voice Training Blue Soundproof Karaoke Stress Relief Scream Pot Scream Vent Irritability and Dissatisfaction Stress Scream Pot Ventilation Complaints can be refreshed with this Scream Pot Stress Relief Mouth Bottle Soundproofing Irritability and Complaints Dissatisfaction Pressure Screaming Bottle Ventilation Refreshing Complaints Karaoke Screaming Vent