Cala Trio, the first non-invasive individualized therapy for hand tremor.

Veterans can evaluate Cala Trio therapy with a prescription from their local VA center at no cost.

Meet Ben
Ben, a 21 year Air Force Veteran shares his story with essential tremor and his experience with Cala Trio.
“I can remember having such a bad day that my wife of 43 years would have to spoon feed me.”

For the visually impaired, a full text alternative of this video is available here

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How it works

1Cala Trio measures your specific tremor.

2Gentle stimulation is sent to the median and radial nerves, traveling to the brain.

3The stimulation interrupt the tremor in the ventral intermediate nucleus of the thalamus part of the brain.


Cala Trio is a wrist worn wearable therapy. No surgery or invasive procedures needed.


Tremor reduction without systemic side effects.


There is no perfect treatment for everyone. If Cala Trio is not right for you, simply return within 60 days for a full refund.


Calibrated to target the source of your tremor.

Results that show

This image is an actual patient test (Archimedes Spiral Task) before and after a 40-minute stimulation therapy with Cala Trio.

Cala Trio in the News
Solving Diagnostic Dilemmas: How a Skin-Based Test for Synucleinopathies Can Change the Treatment Course for Patients Presenting with Tremors

Essential Tremor Symptoms, Severity Improved With Cala Trio Neuromodulation Device

Results of the landmark PROSPECT trial of the Cala Trio, a wrist-worn wearable neuromodulation device for essential tremor (ET), suggest that the device is safe and effective for the reduction of hand tremor in individuals with ET.

Indications for Use

Cala Trio is indicated to aid in the transient relief of hand tremors in the treated hand following stimulation in adults with essential tremor. Please refer to the Safety Information for a complete listing of warnings and cautions.

Caution: Federal law restricts this device to sale by or on the order of a physician.

  1. Lin PT, Ross EK, Chidester P, et al. Noninvasive neuromodulation in essential tremor demonstrates relief in a sham-controlled pilot trial. Mov Disord. 2018;33(7):1182-1183. DOI:<br
  2. Isaacson SH, et al. Tremor and Other Hyperkinetic Movements. 2020;10:29. DOI:

MKG-1111 Rev C June 2021

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