Brand Name: peicon Is Batteries Included: Yes Material: Acrylic Origin: Mainland China Power Source: Rechargeable battery High-concerned chemical: none Voltage: Below-75V DC (Safety Extra-Low Voltage DC, SELV DC) Function: Facial Clean Function: Dead Skin Removal Working Principle: WARM Working Principle: ION+ Working Principle: Ultrasonic Working Principle: ION- Working Principle: vibration massage Working Principle: EMS Working Principle: LED Commodity Quality Certification: ce Certification: CE Choice: yes