Recovery device specifications can look impressive without being informative. Two of the most useful numbers are frequency and amplitude because together they describe the movement you will actually feel.
Frequency is how often movement happens
Manufacturers may describe speed as vibrations per minute, revolutions per minute, percussions per minute, or hertz. Hertz means cycles per second. Ten thousand movements per minute is roughly 167 movements per second.
Amplitude is how far movement travels
A short amplitude means the contact point travels a small distance. A longer amplitude creates more visible travel. This is why two devices with very different speed numbers can still produce very different sensations.
Rapid Release as an example
The current Rapid Release range spans 4,000 to about 10,000 VPM. The company lists a 1/16 inch amplitude for its short stroke orbital vibration approach. The ProAm, for example, provides four steps between 6,000 and 9,000 VPM.
Do not shop by the largest number
Specifications need context. A professional buyer may value consistent high speed and replaceable batteries. A traveler may care more about weight and charging. Someone comparing with percussion may care most about stroke length and feel.
Check the current product lineup, availability, and terms directly with the manufacturer.
Compare Rapid Release specificationsAffiliate disclosure: We may earn a commission if you buy through this link, at no extra cost to you.
A better comparison checklist
Compare motion type, frequency range, amplitude, weight, grip, battery design, charging, warranty, return terms, noise, included contact surfaces, and intended user. Then decide which of those differences matters in your routine.
Continue with Traveler vs ProAm vs Pro3+ for a concrete example.