Rotary tattoo machines are a type of tattooing device that use a rotating motor to drive the needle. Unlike traditional coil machines, which rely on electromagnetic coils, rotary machines offer a smoother and quieter operation. They are often preferred for their lightweight design and versatility, making them suitable for various tattoo styles. These machines can be adjusted for different needle depths and speeds, allowing artists to achieve precise results. Many tattoo artists appreciate rotary machines for their ease of use and reduced hand fatigue during long sessions. Overall, they represent a modern approach to the art of tattooing.