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B37 Percussion Massager
  • B37 Percussion Massager
  • B37 Percussion Massager
  • B37 Percussion Massager
  • B37 Percussion Massager
  • B37 Percussion Massager
  • B37 Percussion Massager
B37 Percussion Massager
B37 Percussion Massager
B37 Percussion Massager
B37 Percussion Massager
B37 Percussion Massager
B37 Percussion Massager
B37 Percussion Massager

Percussive therapy is deep muscle treatment like you've never felt before. Only a few moments with the B37 Percussion Massager and you'll start to feel better, move better, and recover faster.

4.8 (1750 reviews)
B37 Percussion Massager
15° angled handle
for better reach
B37 Percussion Massager
Powerful, level 3
brushless motor
B37 Percussion Massager
Up to 8 Hour
Battery Life
B37 Percussion Massager
1400 - 3200 RPM
Adjustable Speeds
B37 Percussion Massager
4 Attachments Included
B37 Percussion Massager
35 - 55 dB
Ultra Quiet
Lifetime Warranty
Lifetime Warranty Quality guaranteed
Free shipping
Free shipping On all U.S. Orders
U.S. customer care
U.S. customer care 7 days a week
Buy now, pay later
Buy now, pay later Easy payments via Affirm

6 Interchangeable Attachments

Customize each treatment
  • Flat Great for overall use
  • Bullet Pinpoint treatment
including hands feet,
and knots
  • Cone Silicone cone tip perfect for
targeted tender and bony areas
  • Fork Designed for the spine and neck

Feature showcase: Ekrin B37

Professional athletes love the B37

Industry-leading Battery Life: Up to 8 hours of run time

The Kestrel is equipped with a high-powered premium lithium-ion battery providing unprecedented battery life of up to 8 hours. Take your treatment on the go without the hassle of lugging extra batteries or worrying about losing a charge.

6 Optimized Speeds
Switch between low and high intensity

Whether you need deep percussive treatment, have sore or sensitive areas, or just want to activate muscles pre-workout, the Kestrel has a range of speeds calibrated to fit your needs. Enjoy 6 built-in speeds ranging from 1800 RPM to 3500 RPM.

Key features

  • Premium materials

    Soft-touch materials and
premium fit and finish

  • 4 massage heads

    Four classic attachments

  • 5 built-in speeds

    Industry leading range from
1400-3200 RPM

  • 8 hour battery life

    Premium lithium-ion battery

Frequently asked questions

  • How do I use the B37 Percussion Massager?

    Below are some basic best practices when using the B37 Percussion Massager: 

    1. Always turn on the B37 before placing it on the body.
    2. Use speeds 1-3 for muscle recovery and speeds 4-5 for soothing massage and to warm-up muscles pre-workout.
    3. Simply glide the B37 on muscles that need the most attention, and let it do the work for you.  Carefully move up and down the muscle, gradually applying light to moderate pressure as needed.
    4. Remember to breathe and relax to allow your muscles to loosen as the B37 does its job. 

    The B37 Percussion Massager is designed with innovative ergonomics, which includes its 15 degree angled handle.  This, along with the "tower" grip, allow you to hold the B37S in a variety of ways, making it easier than ever to treat hard-to-reach areas like your back.

  • How long should I use my B37?

    We recommend using your B37 Percussion Massager for a minimum of 15 seconds and a maximum of 2 minutes per muscle group.  Do not exceed 15 minutes per session. Try to maintain 2-3 full sessions per day, depending on desired result.


    Before workouts or physical activity, glide your B37 over desired area for 30 seconds to activate and “wake up” your muscles.


    Reactivate muscles during workout or any activity with a quick 10-15 second session on the muscle group. This re-energizes the muscles by removing lactic acid and promoting maximum blood flow. 


    Gently glide your B37 for up to 2 minutes for muscle recovery post-workout.  This will decrease soreness and decrease recovery time.

  • How does percussive therapy work?

    Tension is one of the main causes for most body aches and pains. The massage treatment from the B37 relieves tension in soft tissue effectively and efficiently.

    Percussive massage overrides pain signals to the brain, increases heat in the tissue, and releases tension.  This is achieved using strokes that create impact between 2200-3200 RPM with applied pressure.

  • What are the benefits of percussive therapy?

    Whether you’re an athlete, a physical therapist, or just need relief from tension and pain, Ekrin Athletics provides a natural approach to improving your physical well-being.  Percussive massage can help athletic performance, promote faster recovery, and relieve tension and pain.

    The B37 Percussion Massager helps with the following:

    • Accelerates recovery & muscle repair
    • Increases blood and lymphatic flow
    • Relieves muscle spasms and stiffness
    • Breaks up scar tissue
    • Improves lactic acid clearance
    • Activates the nervous system and muscles
    • Muscle fatigue, pain, tightness, soreness, and knots
    • Natural stress relief
    • Myofascial release (7x more effective than a foam roller)
  • Who Should Use the B37?

    The B37 Percussion Massager was designed to perform and stand up to the rigors of professional use.  That said it is also effective and attainable for daily consumer use.

    Many of our customers include:

    • Athletes from all levels 
    • Trainers, physical therapists, and chiropractors
    • Everyday people
  • Can I travel with my B37?

    Lithium-ion batteries must be stored in carry-on baggage only.  Once on the aircraft, all lithium batteries must be removed from the carry-on bag and kept with the passenger in the cabin.

    Since the B37 has a built-in Lithium-ion battery, it must be stored in your carry-on baggage only.

    Although you are able to travel with your B37 Percussion Massager, it is at the discretion of the TSA officer to allow it through.  If they are unfamiliar with our device, feel free to share our website and social media with them.

  • What is your return policy?

    We have a no-questions-asked 30 day return policy.  If you feel the B37 is not the right fit for you, contact our Customer Care team.

  • How do I register for my warranty?

    If you purchased directly from our website, your warranty has automatically been registered.  

    If you purchased your B37 elsewhere, you will need to register through our Warranty Registration page at


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