Brand Name: NONE Power Source: USB Charger Material: Resin High-concerned chemical: none Origin: Mainland China Voltage: Below-50V AC (Safety Extra-Low Voltage AC, SELV AC) Is Batteries Included: Yes Medical supervision required?: N Working Principle: Low level laser Power Source: USB Charger Certification: CE Number of Pieces: One Unit Function: Dead Skin Removal Function: Facial Clean Function: Skin Mouisture Function: Anti Wrinkle Function: Anti-Acne Function: Whitening Function: Skin Tightening Function: Skin Rejuvenation Commodity Quality Certification: ce type 1: red light therapy type 2: led facial mask type 3: led face mask type 4: red light type 5: home use beauty devices type 6: led face mask type 7: red light therapy type 8: led face light therapy type 9: led mask type 10: led face light therapy type 11: red light mask type 12: red light therapy 660nm 850nm type 13: infrared thermal therapy device type 14: infrared light type 15: red light infrared therapy type 16: facial led mask type 17: Red light therapy device Choice: yes semi_Choice: yes