Catalog edition · October 15, 2026How everyday comfort gadgets work · Sleep · Massage · Feet · Supplements · Direct-sale checks
Advanced Biology Post
Part MW-01Massage & WarmthPercussion massagerClass I, 510(k)-exempt

Therabody Theragun Mini (3rd Gen), Black

A palm-size, battery-powered massager whose motor drives a short arm back and forth so the attachment taps the muscle many times a second. This entry checks the speeds, the attachments, the battery and what Therabody’s manual says about where not to use it.

Advanced Biology Post Editorial Team

Exploded view

Part MW-01 · callouts from the Therabody manual · Oct 15, 2026
Therabody Theragun Mini 3rd generation in black with the Standard Ball fitted and the Dampener and Thumb attachments beside it
  1. 1Ergonomic gripThe triangular plastic and TPU body that you hold; it houses the motor and a 1,200 mAh lithium-ion battery.
  2. 2Power/speed button and LED lightsOne button on the side: hold to switch on or off, press to step through three speeds, press three times quickly to lock; small lights show speed and battery.
  3. 3ArmThe short shaft the motor drives in and out; attachments push onto its tip.
  4. 4Standard BallA firm, medium-size head that Therabody describes as its all-over attachment.
  5. 5DampenerA wider head of lower-density foam, so each tap is spread over more area.
  6. 6ThumbA narrow, dense head that concentrates each tap on a small spot.
Parts named as in Therabody’s Theragun Mini 3rd Generation user manual (“Getting to Know the Device” and “Attachments”), read Oct 15, 2026. The photo is the Amazon listing’s main image with a phone mock-up cropped off.

Spec plate

3rd Gen, Black · from the manual, Therabody and the listing · Oct 15, 2026
Model
Theragun Mini, 3rd Generation, Black (part TG0004128-1A10)
Dimensions
141 x 125 x 49 mm (5.6 x 4.9 x 1.9 in) without attachment
Weight
0.45 kg (about 1 lb)
Power
Built-in 1,200 mAh Li-ion battery; USB-C cable included (no wall adapter listed)
Battery life
Up to 120 min (manual); the listing says up to 180 min
Attachments
3: Dampener, Standard Ball, Thumb; plus a travel pouch
Amplitude and rate
Not stated in the manual or the listing
Care
Wipe with a damp cloth or alcohol-free wipe; not waterproof
Warranty
Not stated in the US manual; Therabody refers to therabody.com/warranty and limits it to authorized retailers
Regulatory status
Class I, 510(k)-exempt therapeutic massager (21 CFR 890.5660, product code ISA)
Speeds
3 (low, medium, high) set by one button; no automatic shut-off

Sources: Therabody’s 3rd Generation manual [1], Therabody’s Mini 3rd Generation FAQ page [2] and Amazon listing B0DV7JN7ZD, read Oct 15, 2026. Battery life is the one figure that disagrees: the manual says up to 120 minutes “depending on the attachment and treatment intensity”, the listing says up to 180. Retailer pages quote an amplitude and speeds per minute, but neither Therabody’s manual nor the listing does, so we leave them out. Regulatory row: Therabody lists “Theragun Mini (All Generations)” with FDA under product code ISA [3][4].

01Operating principle

A percussion massager is a small motor that pushes an attachment against the skin and pulls it back, over and over, so the muscle underneath is pressed in rapid, short strokes.

  1. Motor to arm

    The battery powers a motor inside the grip that moves the arm in and out along one line. Therabody calls the motor quiet and resistant to stalling under pressure [1]; it does not publish the stroke length for this model.

  2. Speed sets the rate

    One button cycles low, medium and high, shown by one, two or three white lights. A higher speed means more strokes per second; Therabody does not publish the rate for each setting [1][2].

  3. The head shapes each stroke

    The attachment decides how the force lands: the foam Dampener spreads it over a wide face, the Standard Ball concentrates it more, and the dense Thumb puts it on a small point [1].

  4. You set the pressure and the path

    The manual says to move the device back and forth across the area with light to moderate pressure, to work around a tender spot rather than press straight into it, and never to push hard enough to cause pain or slow the device [1].

02Fit check

Good fit

  • Healthy adults who want a percussion massager small enough for a bag; it ships with a pouch and a travel lock
  • People who want three fixed speeds and one button, with an optional Bluetooth app for guided routines
  • Large and small muscle groups, which is how Therabody describes the Standard Ball’s use

Poor fit

  • Anyone who expects it to switch itself off: the manual warns it does not shut off automatically
  • Bony areas (a listed precaution) and the throat (a listed contraindication)
  • Anyone who wants to use it while it charges; the manual says not to

Check first

  • Therabody says the device is not recommended for anyone with an implanted electronic device such as a pacemaker, and lists a pacemaker or ICD among its contraindications
  • The manual says the device is intended for people in good health and should not be used by anyone with a history of seizures or a heart condition
  • The manual asks you to consult a physician first if you are pregnant or nursing
  • Its contraindication list, where it says to consult a medical professional before use, includes direct application to the face, throat or genital area, pressure over the eyes or over a surgical site or hardware, and use on rashes, open wounds, blisters or bruises
  • It lists reduced or altered feeling, blood-thinning medicines and a recent injury or surgery as reasons to ask a medical professional first

03What the manual and the labeling say

The useful numbers here come from Therabody, not from a lab of ours. The manual gives three speeds, three attachments and a battery life of up to 120 minutes; Therabody’s FAQ gives the size and weight; and Therabody’s FAQ and the listing add the brand’s claim that the 3rd Gen is 30% smaller, lighter and quieter than the original (1st Gen) Mini [1][2]. We did not find a published amplitude or strokes-per-minute figure from Therabody for this generation, so we do not compare it on those terms.

On regulation, FDA classifies an electric therapeutic massager as a Class I device that is exempt from premarket notification (21 CFR 890.5660) [4], and Therabody’s FDA establishment listing covers “Theragun Mini (All Generations)” under that product code [3]. The manual itself carries the line This device is not intended to diagnose, mitigate, or treat diseases. The listing’s bullets go much further in their wording; we do not repeat them, because they are marketing copy, not test results.

Before you buy

The Mini has no automatic shut-off. Therabody’s manual says to hold the button until it stops, and to lock it (three quick presses) before it goes in a bag. If you have a pacemaker or other implanted electronic device, read the contraindications above before ordering.

04Setup and care

This is how Therabody’s manual says to charge, use and look after the device, not a promise of results.

  1. Charge first

    With the device off, connect the USB-C cable to the port behind the button and to a certified adapter. The light flashes orange for low, blue for half and green for high; don’t leave it on the charger for more than an hour after it is full.

  2. Fit an attachment

    With the device off, line the attachment up with the arm and push it on; to remove it, hold the plastic connector and pull. Keep fingers out of the gap between the attachment and the device.

  3. Run it

    Hold the button to switch on, press to choose a speed, and move the head steadily across the muscle with light to moderate pressure. Stop at the first sign of discomfort.

  4. Switch off and lock

    Hold the button until it stops. Press three times quickly to lock; the lights run in sequence. Press three times again to unlock.

  5. Clean and store

    Wipe it with a damp cloth or alcohol-free wipe; never rinse or submerge it. Store it in the pouch somewhere cool and dry, and charge it fully at least once every six months.

05Price and where it is sold

On Oct 15, 2026 the Amazon listing for the black 3rd Gen showed $219.99, sold by TheraGun (Therabody’s brand store) and shipped by Amazon, in stock, with a free 30-day refund or replacement. Other colors are separate variations on the same page. See the listing on Amazon (as an Amazon Associate we earn from qualifying purchases).

06Who should look elsewhere

  • Anyone with a pacemaker, ICD or other implanted electronic device (manual contraindication).
  • Anyone who wants warmth rather than tapping across a large area: a plug-in heating pad is a different tool.
  • Anyone who wants a published stroke length or force rating before buying; Therabody does not state them for this model.

Sources

  1. Therabody. Theragun Mini 3rd Generation user manual and unit warnings (PDF). Accessed Oct 15, 2026. link
  2. Therabody. Theragun Mini 3rd Generation, specifications and FAQ. Accessed Oct 15, 2026. link
  3. U.S. Food and Drug Administration. Establishment registration and device listing database, Therabody, Inc., product code ISA (via openFDA). Accessed Oct 15, 2026. link
  4. Electronic Code of Federal Regulations. 21 CFR 890.5660, therapeutic massager: Class I, exempt from premarket notification. link

This entry is educational and is not medical advice. It describes what a device does and what its labeling says; it does not say the device will change any health condition. Ask a qualified clinician before using a device like this if you are pregnant, have an implanted device, have reduced feeling in the area, or have an existing condition.