SPECIFICATIONS Working Principle: Warm Working Principle: Vibration Massage Working Principle: Ultrasound Wave Working Principle: Cold Working Principle: EMS Type: Face Washing Brush Standard Voltage: 100V Standard Voltage: 110V Standard Voltage: 220V Standard Voltage: 240V Spa Beauty cryotherapy equipment: Skin Tightening Beauty Instrument Skin Tightening Beauty Device: Ultrasonic Cryotherapy Machine Size: 15 * 4.2 * 4cm Power Source: Korean Power Source: USB Cable Power Source: Japanese Power Source: AU Power Source: UK Power Source: EU Power Source: US Number of Pieces: One Unit Model Number: Hot Cold Hammer Material: Plastic Manufacturing Process: Machine Made Hot and Cold Photon Beauty Instrument: Facial Lifting Vibration Massager Function: Anti-acne Function: Skin Rejuvenation Function: Skin Tightening Function: Facial Clean Function: Whitening Function: Lifting Function: Skin Mouisture Commodity Quality Certification: ce Certification: CCC Certification: RoHS Certification: FCC Certification: CE