... connected to computer USB 4. detect skin hair Skin Detector (USB) Facial & Hair Detector Beauty Equipment(JB-338) Introduction:High-definition ... thin design, more sophisticated. Test the problems of skin and hair, such as the skin moisture, elasticity, oil, blackheads, ... pollution and severely punished, malnutrition. Function:Detect the skin, hair, connected computer(usb)It can easy to find the problem ...