How to use the firefly™

Watch the "how to use" video
We recommend watching the "How To Use" Video for easy instructions on how to position and use the device and knee straps.

Step-by-step Instructions
Step-by-step instructions and images can be viewed here.

Downloadable Instructions
Instructions for fitting and using device (including a list of precautions, warnings and specifications) can be downloaded here.

firefly™ Fitting Instructions

Simple to follow, step-by-step instructions.

Watch The "How To Use" Video

What is the firefly?

Powered by OnPulse™ Technology

  • ON/OFF
    7 Levels of stimulation
  • Power Indicator
    LED level indicator
Firefly Device Functions
  • Location Indicator
    Align to peroneal nerve
  • Electrodes
    Located on backside

The firefly™ is a clinically proven, affordable device that is redefining recovery.


Faster Recovery


Portable Recovery


Increased Circulation

Wear Time Guidelines

How long should you wear your firefly™?

Recommended usage will optimize recovery and get you ready for your next training session, game or race.

Training Time
in hours

  • 1–2
  • 2+

firefly™ Recovery Time
in hours

  • 2+
  • 3–4
How to locate the fibular head

Step 1

Locate the fibular head

firefly™ is easiest to place if you are seated and your legs are bent.

How do I locate the fibular head?
To find the fibular head, start at your ankle bone and follow the side of your leg up toward your knee until you reach the round protrusion (or bony spot), which is just below the knee on the outside of the leg.

Why is the fibular head important?
Locating the fibular head is important in order to stimulate the peroneal nerve, which is located here. Stimulating the nerve will cause your feet to twitch (the firefly™ flutter) causing increased blood flow and circulation to enhance recovery.

Step 2

Correct positioning

Prep the firefly™
Carefully peel off the clear plastic backing and save for reuse of the device. Take care not to get any debris on the gel as it helps to ensure conductivity and adhesion.

Place the device
Ensure the application area is clean and dry. Place the device so that the raised indicator line (marked with arrows) is positioned at the center of the fibular head.

Confirm the position is correct
The circular head of the device should be positioned towards the front of the leg - with the tail of the device wrapped around to the back of the leg, just below the crease of the knee. When you turn the device on, your foot should begin to twitch.

Firefly positioning example
How to turn on

Step 3

Turn the device ON/OFF

How to turn the device ON
Quickly press the button (1 second) to turn on the device. The light will turn on and the device will start once the button has been released.

How to turn the device OFF
Click and hold the button for 4-5 seconds, or until the device indicator light turns off.

How to INCREASE levels
When the device is on, use short clicks of the button (½ second) to increase the level. There are 7 levels and you may need to increase the level to stimulate your nerve so that your feet twitch. The indicator light will flash to correspond with the current level.

How to DECREASE levels
You can use longer clicks (about 1-2 seconds each) to reduce the levels of intensity.

Step 4

Secure the device

Use Knee Strap to Secure the firefly™
firefly™ works best when used with knee straps. Place the knee strap over the device and gently secure in place.

For a demonstration on how to place device and knee strap, please watch the How To Use Video.

Use knee strap to secure firefly device

Troubleshooting Tips

The device is turned on, but nothing is happening.

Reposition the device
Exact anatomical positions may vary in certain individuals. If the original location does not produce the desired foot twitch, you may need to slightly adjust the positioning of the device to ensure indicator line is on the fibular head or bony spot.

Bend your knee
Fit device with a bent knee. Optimal stimulation of the nerve is achieved when the knee is bent and the peroneal nerve is closer to the surface.

Increase the level
You may need to increase the level by quickly pressing the button (see Step 3 above).

Use knee straps
Use of the firefly™ knee straps helps to ensure a secure and close fit. If you did not purchase knee straps, they can be purchased in our shop. Straps are reusable and only need to be purchased once.

Try alternative device placement
In certain circumstances, some individuals may better achieve stimulation by using an alternative location behind the knee. Download our full instructions for use to read about alternative fitting areas.

View firefly™ FAQs

Firefly Device Anatomy Diagram