First of all, Yameng beauty instrument is more popular with women, and there are many models of Yameng. If you really want to say which model is good, it mainly depends on personal needs. So aside from the appearance, the difference is not particularly big, but the function is only slightly different. They are all practical. I think HRF- 1 1 has the highest cost performance! Take myself for example, because I have acne muscles, so many cosmetics can't be used. In Yameng's annual series, HRF- 1 1 is suitable for acne skin. As we all know, acne in hospitals is generally removed by blue light, which should be the most effective method to treat inflammatory acne, because blue light has the functions of calming the skin, sterilizing and diminishing inflammation, and relieving acne muscles. And HRF- 1 1 is superior to 10T because it has the blue light function of LED, but interestingly, HRF- 1 1 is a salon version specially designed for beauty salons, which is not sold by general electrical appliances companies and can only be bought in beauty salons in Japan. Moreover, it is not allowed to be used in cases of metal allergy, facial injection of hyaluronic acid for micro-plastic surgery, implantation of metal objects (such as lip ring, nose ring and eyebrow ring that are buried with gold thread or cannot be taken out), use of metal orthodontic appliances, heart disease and hypertension, and implantation of pacemakers.