Feature: 1. Five gears, one key operation, LCD display, easy and convenient to use. 2. Hyaluronic acid is introduced to moisturize the skin and fade the fine lines 3. Charging and plug in dual‑use, can be wireless operation, simple to use. 4. Anti‑slip design, convenient for your hands to hold, can be easily adjusted without slipping. 5. The spiral mouth shape is three‑dimensional, tight and not easy to slip, and simple operation, easy to install. 6. The adjustment range is 0‑2.5 to meet your needs. The anti‑slip design of the scale makes it more convenient for you to adjust. Specification: Condition: 100% Brand New Item Type: Micro Needle Pen Material: Stainless Steel, ABS Functions: Serum introduction, pore contraction, skin repair Needle Type: Screw port interface Gear: 5 Gear adjustment Power Supply: USB charging Input Voltage: 5V Applicable Scene: Home, salon Battery Type: Lithium battery 14500 Battery Capacity: 800mAh Nano microcrystalline test before use: it is recommended to apply the product to the skin after a small amount of application. After 24 hours can the product be used without any red itching. Nanocrystalline use: 1. Cleaning your face 2. Apply the imported product serum to the part to be operated 3. The operation time of nanocrystalline microcrystal is about 10-15 minutes.It is recommended that the first operation, as gentle hand, control time of 10 minutes or so (stick to the part to be done, do not force oh).During operation, the same part should be moved back and forth for about 3-5 times within 3 seconds. 4. The serum can be applied to the skin after the microcrystalline operation, and the summer mask can be applied directly without a plaque. After microcrystalline use: 1. After the nanocrystalline operation, the skin appears slightly red and tingling, and slight itch is normal.You can apply soothing or sterile repair mask for relief. 2. The nanocrystals should not touches tap water for 6-8 hours after operation (24-36 after operation of ordinary steel needle shows that water should be touched insides). You can use normal saline, cold open to wipe the face. The nanocrystalline can be lightened in 24 hours, while the steel needle can be made light after 3 days. 3. After finishing the microcrystallization, more water should be added (morning/evening sterile repair mask/hydrating mask), sunscreen, skin caring products should be used, and no seafood food should be eaten within 3 days 4. Cleaning with warm water the following day after microcrystalline treatment, and keep normal skin caring.. Package List: 1 x Host 1 x USB Cable 2 x Micro‑Needle