40K cavitation
40K is the dedicated ultrasound cavitation function.
Meet LY-54K2
What does 5-in-1 mean for your care routine?
Learn how 40K cavitation, RF warming and vacuum suction differ. LY-54K2 gives you five handpieces for selected face and body routes, plus separate controls for energy, time and vacuum behavior.
40 kHz cavitation
Five handpieces
Vacuum RF
A five-handpiece tabletop system combining 40 kHz cavitation, vacuum RF and three RF handpiece formats for face and body care.
Start with your concern
Choose by area, not by feature count.
A facial RF step, body cavitation and vacuum RF are different functions. Knowing the area and the handpiece helps you make a clearer choice.
Understand cavitation, RF and vacuum.
RF warming
RF handpieces provide warming through their contact electrodes.
Vacuum RF
Vacuum RF adds a suction-and-release action with separately adjustable strength and rhythm.
Where LY-54K2 fits
Use the facial RF formats for their designated facial paths. Body routes combine the permitted functions for each area. The back route uses RF and vacuum RF, with no 40K cavitation.
Facial firmness-focused care
Use the four-pole handpiece for the facial RF routine. The smaller three-pole format provides a separate facial/eye-area option with its own operating paths.
Abdomen and leg contour care
Combine the body functions in an area-specific sequence. The abdomen route uses six-pole RF, 40K and vacuum RF; the leg route uses 40K followed by vacuum RF.
Vacuum massage with RF warming
Choose vacuum RF for a combined suction-and-warming step. Adjust the suction rhythm with M0–M5 and the strength with the side knob.
A clearer picture
Different areas need different routes.
The abdomen example uses six-pole RF, then 40K, then vacuum RF. Legs use 40K followed by vacuum RF. The back example uses six-pole RF and vacuum RF. The vacuum mode and strength knob do different jobs.
Keep facial and body handpiece paths distinct.
M0 runs RF without suction; the side knob controls suction strength.
Prepare compatible gel, fit the required vacuum filter and clean the used handpieces after the routine.
See the actual system
Watch before you choose.
Explore the machine, its setup and the way the handpieces are used. Start with the walkthrough that answers your question.
Setup walkthrough
Video from the myChway channel. Open on YouTube
Meet the handpieces
Know what each handpiece is for.
Start with the role you need, then open the card for preparation, controls and the permitted areas.
Arms, abdomen & legs40K cavitationThe dedicated 40 kHz ultrasound cavitation handpiece.View detailsHide details
What it does
Ultrasound mechanical energy reaches the prepared contact area through compatible gel. This is the cavitation stage of the selected body routine.
Choose for the cavitation stage of the selected body route.
Where to use
Permitted areas in the arm, abdomen and leg routines. Do not use on the head, chest, breasts, heart area or back.
Preparation & controls
Apply compatible 40K treatment gel to the clean area.
Select 40K with FUNC, check time and energy, and start at the lowest level.
Body · RF & suctionVacuum RFA body RF handpiece with adjustable vacuum suction.View detailsHide details
What it does
RF supplies warming while suction provides a pulling-and-release action. The mode and strength controls let you adjust the rhythm and intensity separately.
Choose for a combined vacuum-and-RF body-care step.
Where to use
Body-care routes, including the abdomen, legs and back as directed.
Preparation & controls
Use compatible contact medium and fit the required filter cotton.
M0 runs RF without suction; M1 is continuous; M2–M5 are intermittent. Adjust strength with the side knob.
Smaller facial areasThree-pole RFThe smaller three-pole facial/eye-area RF format.View detailsHide details
What it does
The contact format provides RF warming for its designated facial-care paths. Prepare the area and keep the contact surfaces positioned as instructed.
Choose for the designated smaller-area facial routine.
Where to use
Follow the designated facial/eye-area paths. Never apply directly to the eyes, thyroid or parathyroid.
Preparation & controls
Use compatible RF medium on clean, moist skin.
Select the three-pole function and check its time and energy settings. Start at the lowest level.
Face & permitted body areasFour-pole RFThe four-pole RF format used in the facial routine and permitted body-area care.View detailsHide details
What it does
RF warming depends on contact between the prepared skin and the handpiece's electrodes. Close contact across the electrode surfaces helps maintain even operation.
Choose for the facial RF route.
Where to use
The facial routine and other permitted areas shown in the operating instructions.
Preparation & controls
Clean the area and apply compatible RF medium.
Select four-pole RF and check time and energy. Keep the contact surfaces against the prepared skin as instructed.
Arms, abdomen & backSix-pole RFThe six-pole body RF format.View detailsHide details
What it does
This body-format handpiece supplies the RF warming stage of the area-specific routine. Prepare with compatible medium and follow the prescribed paths.
Use before 40K in the abdomen route, or before vacuum RF in the back route.
Where to use
The arm, abdomen and back body RF routines.
Preparation & controls
Apply compatible RF medium to the clean area.
Select six-pole Body RF, check time and energy, and begin at the lowest level.
40K cavitation: Do not use on the head, chest, breasts, heart area or back. Three-pole RF: Never apply directly to the eyes, thyroid or parathyroid.
Your first steps
Get ready with a clear guide.
Prepare the right handpiece and follow the operating instructions for your model.
01
Prepare power and connectionsUse the grounded power connection specified in the operating instructions and confirm the regional power cord and supply. With the unit stopped, check the handpiece connections before selecting a function.
02
Check the vacuum filter before useIf the selected routine includes vacuum RF, confirm that the required filter cotton is fitted. Check the associated rubber ring for damage or aging; missing or poorly fitted parts can weaken suction.
03
Cleanse and apply the correct mediumRemove surface oil or essential-oil residue and apply the compatible 40K or RF medium for the selected handpiece. Clean preparation and the correct medium help maintain working contact.
04
Choose the function with FUNCConfirm the selected label: 40K, three-pole RF, vacuum RF, four-pole RF or six-pole RF. Set time and energy on the display; begin at level 1.
05
Set vacuum behavior only when neededMODE is available for vacuum RF. Choose M0 for no suction, M1 for continuous suction, or an intermittent M2–M5 pattern. Use the separate side knob for strength; do not apply these modes to every handpiece.
06
Keep the correct contact and monitor comfortUse the paths for the selected body area. RF contact surfaces need close contact with the prepared skin. If suction becomes excessive, stop and reset it as instructed rather than continuing through discomfort.
07
Pause, finish and move to maintenanceUse Start/Pause to end the active function before moving on. After the selected route, remove residue, switch off, disconnect power and clean the used handpieces and vacuum components.
Make the connection
Choose a route for the care you need.
Facial RF routine
Cleanse→compatible RF medium→four-pole facial RF→finish→clean the handpiece.
Follow the facial movement paths. Use the three-pole handpiece's separate instructions for the designated eye-area route; never apply directly to the eyes.
Abdomen routine
Prepare→six-pole body RF→40K cavitation→vacuum RF→finish and clean.
Choose the function for each stage and check the matching handpiece before starting.
Leg and back routines
Legs: 40K→vacuum RF. Back: six-pole RF→vacuum RF.
Keep 40K out of the back routine and follow the movement paths for the selected area.
Keep your routine going
Care is part of owning the system.
After every use, clean and dry the handpiece surfaces, service the vacuum filter as instructed and prepare the components for the next routine.
01
Stop and disconnectEnd the active function, switch off and disconnect power before cleaning.Ready when the unit is disconnected.
02
Remove gel and visible residueClear gel and impurities from the used handpiece surfaces before wiping.Ready when no visible residue remains.
03
Wipe the handpiece surfacesUse a damp towel or 75% alcohol as directed for the handpiece surfaces, then use a dry towel to remove moisture.Ready when the cleaned contact surfaces are dry.
04
Remove filter cotton for vacuum-handpiece cleaningTake out the filter cotton when cleaning the vacuum RF handpiece. Follow the handling instructions for the fitted filter.Ready when the vacuum-handpiece cleaning step is complete.
05
Check the filter and seal before reuseRefit the required filter correctly and check the rubber seal. Do not operate vacuum RF with a missing filter.Ready when the filter is correctly fitted and the seal is intact.
06
Cover and storeKeep the dried unit in a cool, dry, ventilated place and cover it with a dustcloth or protective cover. Complete the handpiece hygiene routine before the next use.Ready when the dry components are stored and protected.
07
Refer internal work to service personnelKeep internal cleaning and repairs with qualified service personnel. Contact support if a handpiece remains blocked or a fault persists.Ready when the affected function has been checked and cleared for use.
Safety note: Keep 40K away from the head, chest, breasts, heart area and back. Begin at the lowest energy setting, and stop if suction or contact becomes uncomfortable.
MYCHWAY U.S. support
More clarity before and after your purchase.
Beauty technology, made clearer to choose, use, and keep.
Ask before you buy
Tell MYCHWAY which area or routine you are considering and ask about the model, preparation and suitability.
Ask a questionStart with guidance
Watch the model walkthrough and use the operating instructions to prepare the right handpiece and medium.
See the walkthroughsKnow the support policies
Check the applicable main-unit warranty and return terms, and contact support if a function needs attention.
Read the warranty
A useful first check
Help when a setup needs attention.
| What you notice | What to check | Your next step |
|---|---|---|
| Vacuum RF has no suction | M0 intentionally has no suction; filter installation or seals can also affect the vacuum path. | Check the selected mode first. With the function stopped, check the filter and rubber seal, then the suction control. Do not start by applying maximum suction to skin. |
| RF seems absent or uneven | The wrong selection, oily preparation, missing medium or incomplete electrode contact may be involved. | Check FUNC, cleanse the area, apply the compatible medium and confirm full contact. Stop and contact support if the issue remains. |
| 40K seems quiet | Quiet operation can make it difficult to judge the handpiece by sound alone. | Check function selection and the compatible 40K gel. If you are unsure whether it is operating, contact support for the handpiece-check instructions. |
| Suction is excessive or a component is damaged | A setting or a faulty connection may need attention. | Stop the function, reset to an appropriate starting setting and inspect the external connections. Keep damaged parts out of use and contact support. |
Understand the configuration
Know the system before it arrives.
Main components
01
Main unit
02
40K cavitation handpiece
03
Vacuum RF handpiece
04
Three-pole facial RF handpiece
05
Four-pole RF handpiece
06
Six-pole body RF handpiece
07
Power cord and setup accessories
| System configuration | Five dedicated handpieces |
|---|---|
| Cavitation frequency | 40 kHz |
| RF formats | Bipolar vacuum, three-pole, four-pole and six-pole |
| RF frequency | 1 MHz for the four RF formats |
| Energy levels | 1–9 |
| Time setting | 0–60 minutes |
Questions before choosing
A few practical answers.
Which handpiece is used for facial care?
The four-pole RF handpiece is used in the facial routine. The smaller three-pole handpiece has separate facial/eye-area instructions. Never apply directly to the eyes.
Can I use 40K on the back?
No. The back route uses six-pole RF followed by vacuum RF. The 40K precautions exclude the back.
Why is there no suction in M0?
M0 runs RF without suction. Choose M1 for continuous suction or M2–M5 for intermittent patterns, then adjust strength with the side knob.
What medium should I prepare?
Use compatible 40K treatment gel for cavitation and compatible RF medium for the RF handpieces. Clean the area before applying the medium.
How do I clean the handpieces?
Remove gel and residue, wipe the surfaces with a damp towel or 75% alcohol as directed, and dry with a towel. Remove filter cotton during vacuum-handpiece cleaning and refit the required filter before reuse.
What should I check if vacuum RF feels weak?
Stop the function and check the selected mode, filter installation, rubber seal and suction control. If the issue persists, contact support.
Choose with confidence
A clearer next step starts with your question.
Explore the function, watch the system and ask MYCHWAY about the right preparation for your routine.
