Feature: 1. Compared with the traditional needle injection, the injection pen avoid touching the subcutaneous nerve tissue, which greatly reduces the pain of injection, and also avoids the patients' frequent injection without finding the needle eye. 2. After injection with the needle-free injection pen, there will not be any lump at the injection site. Moreover, the way of injection into the body is like a fountain, spreading around, so it is more conducive to the absorption of the body and the effect is faster. 3. Needle-free injections do not cause trauma to the skin, so the chance of infection is very small. 4. In terms of operation, the injection method is simpler and the dose is more reasonable. 5. Because there is no needle, do not worry about accidentally injured people, do not worry about broken needle, patients also have no fear. 6. Needles-free, safety and painless as well as high efficiency to use. Specification: Condition: 100% Brand New Item Type: Hyaluronic Injection Pen Material: ABS Injection Depth: 6 -- 8mm Resolution: 0.01ml(1lU) Single Injection Dose: 0.05-0.3ml (5-301u) Service Life: 7000 times Package List: 1 x Host