Product description Specification: Condition: 100% new Item Type: Microneedle Pen Material: ABS Color: rose gold Functions: introduction of serum, pore contraction, skin repair Needle type: screw type interface Gear: 5 gear adjustment Power supply: USB charging Input voltage: 5V Applicable: home, living room Battery type: 14500 lithium battery Battery capacity: 800 mAh Test before use: it is recommended to apply the product on the skin after a small amount of application. You can use the product if there is no red itch after 24 hours. Usage: 1. Cleanse your face 2. Apply the serum on the part to be operated 3. The operating time is approximately 10 to 15 minutes. It is recommended that in the first operation, use as smooth as possible, the control time of about 10 minutes (stick to the part to be done, do not use force) .During operation, the same part should move forward and backward for about 3-5 times in 3 seconds. 4. The serum can be applied to the skin after the operation and the mask can be applied directly. Package list: 1 x host 1 x USB cable 2 x micro needle Ingredients default