Stroke: 4.0MM Grip Diameter: 33 MM Working Time: 5-8 Hours Weight: 209 g Color: Black/Grey Charging Time:2-3 Hours Length: 134 MM Motor: Coreless Motor Charging Interface: TYPE-C RPM: 9800 RPM Voltage Adjustability: 4-12 V Battery Capacity: 2000 mAh CNC HAMMER E403 Wireless Dual-Battery 4.0mm Stroke Tattoo Machine Dual High-Capacity Batteries Equipped with 2000mAh ×2 batteries, each lasting 5–8 hours for uninterrupted long sessions. Precise 4.0mm Stroke Perfect for a wide range of tattoo styles, from fine lining to large-area shading. The long stroke delivers deeper needle penetration and carries more pigment with each hit, making it perfect for solid blacks, large color fills, and bold shading. The 4.0MM fixed stroke is ideal for coloring large traditional designs, enabling realistic sketching, shading, and traditional styles. It is highly suitable for professional tattoo artists. High-Definition Color LED Screen Real-Time Tracking: Voltage, frequency (Hz), battery level, work/pause status, and timer at a glance. Lightweight & Durable Design Aluminum alloy frame, only 209g, comfortable for long hours while maintaining durability and stability. Core Advantages Coreless Motor: Low vibration, low noise, and stable output. Precision | Low-Pain | Durable. Ergonomic Grip for Comfort 33mm non-slip grip diameter fits naturally in the hand for better control. Complete Professional Kit (Ready to Use) CNC Hammer E403 Machine ×1 Spare Battery ×1 Type-C Charging Cable ×1 Travel Case ×1 User Manual ×1 Top Choice for Professional Artists Designed to maximize efficiency and safety for flawless results. Versatile Style Support: Excellent for American Traditional, Japanese, heavy black & gray, and vibrant realism that demand solid color saturation and bold fills.