FkIRONS - FK ONE UPDATE 4.0mm STROKE

BUILT FOR HIGH-DEMAND STUDIO ENVIRONMENTS 

The FK One Update is engineered as a dependable, all-purpose rotary designed to perform across a wide range of artists and techniques. As an evolution of a proven platform, it delivers consistent output, simplified usability, and broad versatility—making it an easy, high-confidence option for shops looking to streamline machine offerings without sacrificing performance coverage. 

EXTENDED RUN TIME WITH CLEAR SYSTEM FEEDBACK 

Dual battery compatibility (18500A & 18650A) supports extended operating sessions with up to 5.5–6.5 hours per battery depending on configuration. A 1.1” integrated LCD display provides real-time visibility of voltage and system settings, helping reduce user error and ensuring clear operational feedback in fast-paced studio environments.

BROAD ARTIST COMPATIBILITY & REDUCED FATIGUE 

At 215g (233g with battery), the FK One Update is balanced for control, stability, and extended use across varying artist styles. Compatibility with Ergo Shield grips supports faster setup and improved comfort, making it an accessible, multi-user solution that fits easily into both beginner and advanced artist workflows—ideal for retail and shop-level stocking. 

SIMPLE, FLEXIBLE PERFORMANCE RANGE 

With a 5V–12V (80Hz–180Hz) operating range and precise incremental adjustments, artists can fine-tune machine performance to match their technique, workflow, and client skin response in real time. Fixed 3.0mm and 4.0mm stroke options cover core tattooing applications including lining, shading, and packing, enabling a single SKU to support multiple techniques without added complexity for end users. 

TECHNICAL SPECIFICATIONS: 

Weight: 215g / 233g (with battery)  

Length: 126mm / 134mm  

Max Width: 38mm  

Stroke Options: 3.0mm / 4.0mm (fixed)  

Voltage Range: 5–12V (0.2V increments)  

Frequency Range: 80–180Hz  

RPM: 4,800–10,800  

Motor: Brushed coreless motor  

Battery System: Dual compatibility (18500A & 18650A)  

Battery Life: 5.5–6.5 hours per battery  

Charge Time: 2–2.5 hours max  

Display: 1.1” LCD screen  

Grip Compatibility: Ergo Shield compatible 

Spare Drop-In Batteries can be found here.

Resources:
User Manual

International User Manual