●✔️Enhanced Speed - 2024 Upgraded 6 speed levels, the working speed is further increased by new precise design, along with high efficiency and long service life. 6 Optional working speed settings from weak to strong meet your different needs. ●✔️Adjustable Needle Length - Feel free to choose the needle length by turning the non-slip rotary dial to improve the effectiveness of the skin care. Simple operation and user friendly even for greenhand. ●✔️Wireless Operation - The microneedle pen is rechargeable, supporting quick charging and having ultra long standby time. Its specially designed for home and travel use. ●✔️20Pcs Cartridges - One package comes with 20pcs replacement cartridges. After massive research, Lifewit packs the most porpular types for you(8pcs 16pin+8pcs 36pin+2pcs 42pin+2pcs Nano). Each cartridge is individually packaged for disposable use. ●✔️2 Years Warranty - Lifewit provides reliable product quality and satisified experience has attracted a large number of loyal customers. We stand for 2 years warranty and 24/7 after sale service team can be reached anytime.