V2 Kegel Exerciser & Pelvic Floor Stimulator with Vaginal Probe

V2 Kegel Exerciser and Pelvic Floor NMES Stimulator

The V2 Kegel Exerciser is a single-channel electrical muscle stimulation device designed for pelvic-floor neuromuscular stimulation in adult women.

The system delivers programmed electrical pulses through a reusable vaginal probe to create controlled pelvic-floor muscle contractions. Its FDA-cleared intended use is electrical stimulation and neuromuscular re-education to rehabilitate weak pelvic-floor muscles in women with stress, urgency, and mixed urinary incontinence and to help them maintain urinary continence. 

Unlike a manual Kegel weight or app-based squeeze trainer, the V2 actively delivers NMES stimulation. Unlike a professional EMG biofeedback system, however, it does not measure electrical muscle activity, display microvolt readings, or electronically score contraction quality.

The current package includes:

• V2 pelvic-floor stimulator

• Reusable vaginal probe with indicator wand

• One probe lead wire

• Four AA batteries

• Instruction manual

The control unit uses two AA batteries; the current retail kit provides two additional batteries.

Product Highlights

• Pelvic-floor NMES and EMS stimulation

• Intended for adult women

• Reusable vaginal stimulation probe

• Mechanical contraction indicator wand

• Five preset stimulation programs

• Intensity display adjustable from 0–99

• Maximum listed output up to 80 mA into a 500-ohm load

• Automatic 30-minute programs

• Key-lock function

• Pause and resume control

• Last-used program memory

• Single output channel

• Battery-powered portable design

• Uses two 1.5-volt AA batteries

• Four AA batteries included

• The probe is not made with natural rubber latex

• Reusable, single-patient probe

• FDA 510(k) cleared for over-the-counter use

• Manufactured in Taiwan

The V2 is a single channel, has five fixed programs, an asymmetrical rectangular biphasic waveform, an output up to 80 mA, and battery operation using two AA cells.

V2 Specifications

Actual delivered current can be lower than the displayed or maximum value because the probe-to-tissue impedance affects the electrical circuit.

What Is a Pelvic-Floor NMES Device?

NMES stands for neuromuscular electrical stimulation. It uses electrical pulses to stimulate motor nerves and produce muscle contraction.

With the V2, the current travels through two conductive surfaces on the vaginal probe. The pulse pattern alternates between contraction and relaxation periods according to the selected program.

This differs from TENS, which is generally used for sensory-level pain modulation rather than targeted pelvic-floor contraction.

Read TENS vs. NMES: Differences, Uses, and Device Selection for a fuller explanation of sensory and motor electrical stimulation.

FDA-Cleared Intended Use

The Incontinence Stimulation System is cleared to provide electrical stimulation and neuromuscular re-education for:

• Rehabilitation of weak pelvic-floor muscles

• Treatment of stress urinary incontinence in women

• Treatment of urgent urinary incontinence in women

• Treatment of mixed urinary incontinence in women

• Maintenance of urinary continence in women

It is an over-the-counter Class II device. The cleared system combines the EV-805I stimulation platform with compatible vaginal probes. 

The page should not imply that the V2 treats the following:

• Pelvic organ prolapse

• Pelvic pain

• Sexual dysfunction

• Faecal incontinence

• Neurological bladder disease

• Urinary tract infection

• Interstitial cystitis

• Endometriosis

• Postpartum injuries generally

• Male urinary incontinence

The available FDA clearance and V2 manual are specific to vaginal stimulation for urinary incontinence in adult women.

Understanding Stress, Urgency and Mixed Incontinence

The program groups above follow the available V2 instruction manual. A diagnosis should not be made from a product-description table. New, changing, painful, or unexplained urinary symptoms require professional evaluation.

Five Preset Pelvic-Floor Programs

The current V2 manual documents five fixed 30-minute programs. The user selects the program and adjusts intensity; frequency, pulse width, contraction time, and rest time are preset.

The programs are not intended as substitutes for diagnosis. Select the program that corresponds to the confirmed continence problem and the current instructions supplied with the device.

Adjustable 0–99 Intensity Control

The V2 displays intensity on a scale from 0 to 99. The scale is a device level, not a direct one-to-one milliamp reading.

The technical specifications list a maximum output of up to 80 mA into a 500-ohm load. Actual output depends partly on probe contact and impedance. 

Increase intensity gradually after the probe is correctly inserted:

1. Begin at level 0.

2. Raise the intensity slowly.

3. Stop at a strong but tolerable contraction.

4. Reduce the level if the sensation becomes painful, sharp, burning, or difficult to tolerate for the complete program.

5. Stop the session for muscle fatigue or discomfort.

The manual advises selecting the highest comfortable level rather than using an arbitrary intensity number.

What Should Pelvic-Floor Stimulation Feel Like?

The sensation commonly progresses from the following:

• Mild tingling

• Increasing pressure or pulsing

• A tightening sensation around the probe

• A noticeable pelvic-floor contraction

• Relaxation between contractions

It should not feel like

• Sharp electrical pain

• Burning

• Pinching

• Persistent cramping

• Severe pelvic pain

• Pain that continues after the session

• Irritation caused by an inadequately lubricated or incorrectly positioned probe

Intensity is individualized. A level that is comfortable for one user may be excessive or insufficient for another.

Indicator Wand: Mechanical Feedback, Not EMG Biofeedback

The included probe has an indicator wand that can be attached at its base. During a correctly performed voluntary Kegel contraction, the wand should move downward, away from the body. 

This can provide a simple visual indication of movement, but it is important not to call it EMG biofeedback.

For professional pelvic-floor measurement, biofeedback, stimulation, and EMG-triggered stimulation, compare the Richmar EMG Pro and read Balego’s EMG Pro Women’s Health guide.

Pelvic-Floor Electrical Stimulation vs. Manual Kegel Exercises

Supervised pelvic-floor muscle training remains a first-line treatment for stress and mixed urinary incontinence. NICE advises against routinely combining electrical stimulation with pelvic-floor training but says electrical stimulation or biofeedback should be considered when a woman cannot actively contract the pelvic-floor muscles. (NICE)

The V2 should therefore be positioned as a specialized pelvic-floor stimulation tool, not as automatically superior to correctly performed voluntary exercises.

iStim V2 vs. Richmar EMG Pro

The V2 is simpler and more economical. The EMG Pro is more appropriate when the provider needs objective muscle-activity measurement, relaxation training, EMG-triggered stimulation, treatment records, or wider programming flexibility. (Balego)

iStim V2 vs. a General NMES Unit

Do not connect the included V2 probe to an ordinary TENS or NMES unit merely because the plug appears to fit. The manual identifies the probe for use with the V2 control unit, and the device-probe combination is part of the cleared continence system.

For external muscle stimulation, compare the Balego EMS Digital NMES Stimulator or browse Balego’s neuromuscular stimulation collection.

What Comes With the iStim V2?

The device requires two batteries, with two extra batteries supplied in the current iStim package. Water-based lubricant is required for insertion but is not listed as an included item. 

Battery Information

The V2 should not be placed in Balego’s rechargeable-device category or described as USB rechargeable.

How to Set Up the V2

Follow the complete instruction manual supplied with the current unit.

1. Review the safety information

Confirm that none of the listed contraindications apply. Seek professional evaluation when the type or cause of urinary leakage has not been established.

2. Insert the batteries

Install two new 1.5-volt AA batteries, observing the marked polarity.

3. Clean the probe

Before initial use and before every subsequent treatment, wash the probe with mild soapy water, rinse it thoroughly with potable water, and allow it to dry.

4. Connect the lead wire

Connect the probe to the lead wire and connect the lead-wire plug to the V2 control unit while the device remains off.

5. Attach the indicator wand

Attach the indicator when voluntary Kegel movement feedback is desired.

6. Apply compatible lubricant

Apply an appropriate sugar-free, water-based lubricant to the probe. Do not use petroleum-based lubricant or cover the probe with a condom or another material.

7. Insert the probe before powering on

The vaginal probe must be correctly positioned before the control unit is switched on.

8. Select the program

Use the P+ and P− controls to select P1 through P5.

9. Increase intensity gradually

Begin at zero and increase until a strong but tolerable pelvic-floor contraction is produced.

10. Lock the controls

Activate the key lock to help prevent accidental changes during the program.

11. Allow the program to finish

Each current V2 program runs for 30 minutes and stops automatically.

12. Turn the device off before removing the probe

Never remove or reposition the probe while stimulation remains active.

13. Clean and dry the probe

Wash the probe with mild soapy water, rinse thoroughly, dry completely, and return it to its storage bag.

Probe Care and Replacement

The vaginal probe is reusable but intended for one person only.

The manual recommends replacing the probe after approximately 60 uses. Inspect it sooner for corrosion, cracking, rough surfaces, damaged wiring, discoloration, or unreliable stimulation.

Who May Consider the iStim V2?

The V2 may fit an adult woman who:

• Has been evaluated for stress, urgency, or mixed urinary incontinence

• Has weak pelvic-floor muscle activation

• Has difficulty identifying or producing a voluntary pelvic-floor contraction

• Has been advised to use internal electrical stimulation

• Wants a simple home unit with fixed programs

• Can safely insert, clean, operate, and store the probe

• Does not have a contraindication listed in the manual

Professional assessment is especially valuable when symptoms include pain, difficulty emptying the bladder, recurrent infections, blood in the urine, neurological symptoms, pelvic pressure, or prior pelvic surgery. NICE recommends assessment of pelvic-floor contraction and urine testing when women present with urinary incontinence. (NICE)

Who Should Not Use the V2?

The current manual says not to use the device in the presence of several conditions, including:

• Pregnancy or suspected pregnancy

• Cardiac pacemaker

• Implanted defibrillator

• Other implanted metallic or electronic devices

• Pelvic mesh or another supportive pelvic implant

• Open vaginal wounds

• Swollen, red, infected, or inflamed vaginal tissue

• Numbness or impaired sensation

• Cancerous lesions in or near the treatment area

• Undiagnosed chronic pain

• Use by anyone under age 18

• Anal application

It also advises consultation before use for suspected heart problems, epilepsy, or a tendency toward internal bleeding following injury.

Do not use the device:

• In a bath, shower, pool, or spa

• While driving or operating machinery

• Near active shortwave or microwave therapy equipment

• With electronic monitoring equipment that may be affected

• When the unit, cable, or probe appears damaged

• For longer than the programmed treatment time

• To the point of fatigue or discomfort

Frequently Asked Questions

What is the V2 Kegel Exerciser?

It is an electrical pelvic-floor muscle stimulator with a reusable vaginal probe and five preset NMES programs.

Is it a TENS unit?

No. It is a continence-focused EMS/NMES device designed to create pelvic-floor muscle contractions. It is not a general pain-management TENS unit.

Is the iStim V2 FDA-approved?

The accurate regulatory term is FDA 510(k) cleared, not FDA approved. The Everyway Incontinence Stimulation System was cleared under K161349. 

Is it over the counter?

Yes. The FDA summary identifies the system as OTC.

Is this device intended for men?

No. The cleared intended use and V2 manual specify urinary incontinence in women, and the included treatment interface is a vaginal probe.

How many programs does it have?

The current V2 manual and current iStim retail listing describe five programs, P1–P5.

How long is each program?

Each current V2 program runs for 30 minutes.

How often should it be used?

Use the schedule in the current manual or the instructions provided by the treating professional. Do not exceed the program duration or use it to the point of fatigue.

What does the 0–99 scale mean?

It is the displayed intensity level. It is not a direct 0–99 mA measurement. The maximum technical output is listed as up to 80 mA into a 500-ohm load.

Should stimulation be painful?

No. It should produce a strong but tolerable contraction. Reduce the level or stop when stimulation feels sharp, burning, painful, or excessively fatiguing.

Does the indicator wand measure muscle strength?

No. It gives a visual indication of general probe movement during a voluntary contraction. It does not electronically measure strength or provide EMG biofeedback.

Is lubricant included?

The current package contents do not list lubricant. Appropriate water-based lubricant can be found here.

Is the probe reusable?

Yes, but only by one person. It must not be shared.

How should the probe be cleaned?

Wash it with mild soapy water before and after use, rinse it with potable water, and allow it to dry completely.

Can the probe be covered with a condom?

No. The manual instructs users not to cover it with a condom or another material.

When should the probe be replaced?

The manual recommends replacement after approximately 60 uses, or sooner when damage or unreliable performance is observed.

Is the device rechargeable?

No. It uses two AA batteries. Four batteries are included in the current iStim kit.

Can rechargeable AA batteries be used?

The current V2 manual instructs users not to use rechargeable batteries.

Can the V2 be used during pregnancy?

No. The manual says not to use it during pregnancy or suspected pregnancy.

Can it be used with pelvic mesh?

No. The manual says not to use it with pelvic surgical implants such as mesh or other supportive devices.

Can the included probe be used rectally?

No. The current V2 instructions specify vaginal placement and prohibit anal stimulation.

Does it treat pelvic organ prolapse?

Pelvic organ prolapse is not part of the product’s cleared intended use. The product page should not make a prolapse-treatment claim.

Can it replace pelvic-floor physical therapy?

It is a home stimulation tool, not a substitute for diagnosis, supervised pelvic-floor muscle training, bladder training, or professional rehabilitation when those services are needed.

Final Product Summary

The V2 Kegel Exerciser is best suited to adult women seeking a straightforward, continence-specific pelvic-floor NMES system with the following:

• Five fixed programs

• Adjustable 0–99 intensity

• A reusable vaginal probe

• A visual indicator wand

• Automatic 30-minute timing

• Key-lock protection

• Portable AA battery power

• FDA-cleared OTC labeling

Choose the V2 when simple electrically assisted pelvic-floor contractions are the primary requirement.

Choose the Richmar EMG Pro when a pelvic-health professional needs EMG measurement, electronic biofeedback, EMG-triggered stimulation, customizable programming, or clinician-to-patient program controls.

Browse additional NMES and EMS devices or review Balego’s EMG and pelvic-floor rehabilitation resources.