Solong Tattoo E75
Solong Tattoo E75 Wireless Tattoo Kit User Manual
Model: E75 | Brand: Solong Tattoo
Introduction
Thank you for choosing the Solong Tattoo E75 Wireless Tattoo Kit. This manual provides comprehensive instructions for the safe and effective use of your new tattoo machine. Please read this manual thoroughly before operation and retain it for future reference.
Package Contents
The Solong Tattoo E75 Wireless Tattoo Kit includes the following items:
- 1x Solong E75 Wireless Tattoo Machine
- 2x 1500mAh Portable Power Supply Batteries
- 40x Needle Cartridges (20x 1203RL, 20x 1211RM)
- 1x Portable Carrying Case
- 1x 30ml Pure Black Tattoo Ink (for practice skin only)
- 5x Waterproof Table Covers
- 5x Transfer Papers
- 2x Practice Skins
- 1x Pair of Disposable Gloves
- 1x Bandage Wrap
- 30x Pigment Cups (Large, Medium, Small assorted)

Image: All components included in the Solong Tattoo E75 Wireless Tattoo Kit.
Setup Instructions
- Charge Batteries: Ensure both 1500mAh batteries are fully charged before first use. Connect them to a compatible USB charging adapter.
- Attach Battery to Machine: Twist one of the charged batteries onto the top of the tattoo machine until securely fastened.
- Insert Needle Cartridge: Select the desired needle cartridge. Push the cartridge firmly into the machine's front opening.
- Lock Needle Cartridge: Rotate the needle cartridge clockwise until it clicks into place, securing it to the machine.
- Adjust Needle Length: Rotate the grip section of the machine to adjust the needle protrusion (depth). The recommended range is typically 0-4.5mm.
- Power On: Press and hold the power button on the battery pack to turn on the machine. The LED display will illuminate, showing the current voltage and battery level.

Image: Step-by-step guide for assembling the tattoo machine and needle cartridge.
Operating Instructions
Voltage Adjustment
- Use the '+' and '-' buttons on the battery pack to adjust the output voltage. The voltage range is 4V-12V.
- The LED display will show the current voltage setting.
- Adjust voltage according to needle type, skin type, and desired effect (lining or shading).
Stroke Length Adjustment
The Solong E75 features 7 adjustable stroke lengths, allowing versatility for various tattooing techniques.
- Available stroke lengths: 2.4mm, 2.7mm, 3.0mm, 3.3mm, 3.6mm, 3.9mm, 4.2mm.
- To adjust the stroke length, rotate the red ring on the machine body. Align the desired stroke length indicator with the arrow.
- Shorter strokes (e.g., 2.4mm - 3.0mm) are generally suitable for fine lining and delicate work.
- Longer strokes (e.g., 3.6mm - 4.2mm) are typically used for shading, color packing, and bold lines.

Image: Visual representation of the adjustable stroke lengths for lining and shading.
LED Display Information
The integrated LED display on the battery pack provides real-time information:
- Working Voltage: Displays the current output voltage.
- Working Time: Shows the duration of the current tattooing session.
- Remaining Battery Capacity: Indicates the battery charge level.

Image: The LED display on the battery pack showing voltage and working time.
Maintenance
Cleaning and Sterilization
- Always disconnect the battery before cleaning.
- The machine body should be wiped down with a clean cloth and a suitable disinfectant solution after each use.
- Do not immerse the machine or battery in liquid.
- Needle cartridges are single-use and disposable. Dispose of used cartridges safely in a sharps container.
- Ensure all surfaces that come into contact with skin or ink are properly cleaned and disinfected to prevent cross-contamination.
Battery Care
- Store batteries in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid overcharging or completely draining the batteries to prolong their lifespan.
- If the machine will not be used for an extended period, charge the batteries to approximately 50% before storage.
Storage
Store the tattoo machine and its components in the provided portable carrying case to protect them from dust, damage, and moisture.
Troubleshooting
- Machine Not Turning On:
- Ensure the battery is fully charged and securely attached.
- Press and hold the power button for a few seconds to activate.
- Inconsistent Power/Performance:
- Check battery charge level.
- Ensure needle cartridge is correctly inserted and locked.
- Verify stroke length setting.
- Resetting Run Time on Battery:
- To reset the working time displayed on the battery, quickly press the 'On' button three times.
- Needle Cartridge Issues:
- If the needle feels stuck or does not move smoothly, ensure it is properly seated and not damaged. Replace if necessary.
If you encounter issues not covered here, please refer to the support section for assistance.
Specifications
| Feature | Specification |
|---|---|
| Model | E75 |
| Machine Weight | 214g |
| Frame Material | Aerospace Aluminum Alloy |
| Motor Type | Brushless Motor |
| Motor Speed | 6500 RPM |
| Adjustable Stroke Lengths | 2.4mm, 2.7mm, 3.0mm, 3.3mm, 3.6mm, 3.9mm, 4.2mm (7 options) |
| Battery Capacity | 2x 1500mAh Lithium Ion |
| Working Voltage | 4V-12V |
| Working Time (per battery) | 8-10 hours |
| Needle Compatibility | Standard Cartridge Needles |
Warranty and Support
Warranty Information
Solong Tattoo provides a three-year warranty for the tattoo machine from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. Please retain your proof of purchase for warranty claims.
Customer Support
For technical assistance, troubleshooting, or warranty inquiries, please contact Solong Tattoo customer support. Refer to the contact information provided with your product packaging or visit the official Solong Tattoo website for support details.
When contacting support, please have your product model (E75) and purchase date available.
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.