AAA battery easily replaced, durable and everlasting Built-in sound wave vibration system Compact and portable, easy taking Vibration Powder puff - New product, couldn't miss. Name: Vibration Powder puff Material: ABS, Latex sponge Size: 90*40MM (diameter)Power source: 1 AAA battery Weight: 33G (battery not included) Attach: 4PCS power puffVibrating frequency: 20000-22000/min Battery life: 13mins ...