S7 Wireless Tattoo Pen Kit: Enhance skills, develop style, and build reputation. Compact, silent, and versatile for tattoos and permanent makeup. Needle protrusion: 0-4mm. Stroke length: 3.5mm. Recommended voltage: 6-8V for efficiency.Chic & Durable: Legendary white color. Mcore coreless motor. 26mm slim handles with soft stripe. Seamless frame body. Short and small cordless pen. Quality aluminum and sturdy steel.Versatile Use: Mast S7 kit with pro cartridges needles by Mastlabs. Ideal for lining, shading, packing, and layering. Safer with included disinfector.Fancy Gift Idea: Original design. Stylish look. Quality craftsmanship. Perfect gift for any occasion. Treat yourself¡ªyou¡¯re worth it!