Tanda zap acne spot treatment device. Clinically proven to clear or fade acne blemishes within 24 hours. The first and only device that puts the power of three proven technologies at your fingertips, it combines the same powerful blue light technology used by dermatologists with sonic vibration and gentle warming to give you clinically proven clearing results. No pain. No irritation. No dryness. And best of all no pimple. Included with the zap acne spot treatment device are 3 AAA batteries.