The Saeyang Marathon K35 Mini + SH20N is a compact professional e-file setup designed for nail technicians who want a smaller control unit with salon-level control for everyday services. Current retailer pages position the K35 Mini + SH20N as a Korean-made micromotor system for gel, acrylic, and acrygel work, with a compact body and digital speed display.

Key Features

• 30,000 RPM
• SH20N handpiece included
• 40W power output
• Digital speed display
• Forward / reverse switch
• Pause function
• Overload protection
• Automatic energy-saving function
• Dual voltage 110V / 220V
• Hand / pedal control support

Why It Works Well for Professional Use

This setup is best for nail techs who want a light, compact drill for precise manicure work and lighter salon tasks. The K35 Mini is consistently described as a compact model with display-equipped control, while the SH20N is positioned as an ultra-light handpiece with smooth, low-vibration performance.

There is one important nuance: Foxy Nails explicitly notes that for pedicures you need a handpiece with a minimum torque of 3.0 Ncm, while the SH20N is listed at 2.7 N·m. Because of that, this configuration is safer to position for manicure and lighter cosmetic pedicure, not for heavy-duty dry pedicure work.

K35 Mini Control Unit

Seller pages for the K35 Mini describe the base unit with 40W power, a digital speed display, reverse, pause, overload protection, and automatic energy-saving. The same sources describe it as a dual-voltage compact micromotor suited to smaller workstations and portable-friendly setups.

SH20N Handpiece

The SH20N handpiece is listed at 30,000 RPM, 2.7 N·m torque, 128 × 26 mm, 163 g without cord, and 30V, with a 3-prong connector and low-vibration operation. This makes it one of the lighter handpiece options in the Marathon range.

Technical Specifications

• Product type: Professional electric nail drill set
• Model: Marathon K35 Mini + SH20N
• Max speed: 30,000 RPM
• Control unit power: 40W
• Handpiece torque: 2.7 N·m
• Handpiece size: 128 × 26 mm
• Handpiece weight: 163 g without cord
• Handpiece voltage: 30V
• Control unit size: 122 × 121 × 52 mm
• Voltage: 110V / 220V dual voltage
• Functions: reverse, pause, overload protection, manual/pedal control

What’s Included

Your supplied product text positions this page as the pedal-included configuration. The K35 Mini family pages also consistently describe the setup as including the handpiece, handpiece holder and power adapter.

Best For

This model is a strong choice for nail technicians who want a compact professional e-file with a lighter 30K handpiece for precise manicure work, gel removal, and lighter salon services, while keeping pedal control in the setup.

Important Note

When switching between forward and reverse, the safest practice is to let the motor come to a complete stop first. Your supplied product text includes that warning, and it aligns with standard use guidance for this type of handpiece/controller setup.