1. Large size nano crystal head precise coverage: 5mm*5mm large size 5D nano crystal head is used which has a larger contact area; the crystal head is densely covered with 144 nano microneedles which can easily reach the pores of the skin.2. Effective penetration into the bottom of the skin: The microneedles are 150um long which can break through the stratum corneum quickly open the channel for skin absorption promote nutrients to penetrate deep into the skin & play a role in infiltrating the bottom of the skin.3. Gentle & does not hurt the skin: the chip manufactured by micro-nano processing technology the needle tip is controlled below 100nm in diameter which is only one-thousandth of the hair & the needle tip contact is as low as 21.8nm opening the skin absorption channel without breaking The skin does not hurt the skin.4. Equipped with red & blue light meticulous care: red light speeds up metabolism brightens the skin & stimulates collagen regeneration; blue light source...