1. ​​Technical Specs​​

• PMU: ​​3-12V DC​​, low torque, precision-focused.

• Tattoo: ​​3-15V​​, high torque for deeper penetration.

2. ​​Needle Specs​​

• PMU: ​​≤0.2mm needles​​, superficial epidermal layers (0.05-0.2mm depth).

• Tattoo: ​​0.3-0.5mm needles​​, dermal layer insertion.

3. ​​Application​​

• PMU: Cosmetic (eyebrows, lips), natural & temporary (1-3 years).

• Tattoo: Bold body art, permanent pigmentation.

4. ​​Motor Tech

​​ • PMU: ​​Magnetic rotary motors​​ (40% vibration reduction).

• Tattoo: Electromagnetic coils for rapid, forceful strokes.

5. ​​Pigment Retention​​

• PMU: Fades faster (epidermal placement).

• Tattoo: Stable in dermis (long-term stability). ​​

Summary​​: Both use needles but differ in voltage, needle size, depth, motor design, and application goals. PMU prioritizes precision for subtle enhancements, while tattoo machines focus on bold, long-lasting body art.