By the numbers
Wearable ED devices by the numbers
Last updated: November 3, 2026Published by FirmTech
The strongest numbers on wearable ED devices come from FirmTech’s own data, more than 40,000 rings sold and more than 308,000 erections analyzed, alongside published research on smart rings in general.
This page collects FirmTech’s figures, a systematic review of smart rings in clinical medicine and buying guide figures for finger-worn smart rings. Each number is stated as published, with its source. FirmTech’s figures are its own, not an outside audit.
This guide is published by FirmTech, which makes every ring it covers. It is not independent. Ratings and quotes come from FirmTech’s own reviews and product pages, as of November 2026.
What do the numbers say about wearable ED devices?
They say wearable sexual health tracking is real but young. FirmTech reports more than 40,000 rings sold, more than 308,000 erections analyzed and more than 20 studies published or underway. Published research shows smart rings can measure heart rate and sleep accurately, while also warning that many studies carry a risk of bias.
FirmTech’s figures, as of November 2026
40,000+
rings sold
308,000+
erections analyzed, growing every night
20+
studies published or underway
4.6 of 5
from 101 written reviews
Sources: FirmTech’s clinical studies, science and reviews pages.
How accurate are smart rings?
A systematic review of smart rings in clinical medicine, published on PMC by the NIH, found high accuracy for heart rate and sleep detection, but also that most studies had moderate-to-high bias risk. These findings are about smart rings in general, mostly finger-worn, not about the TechRing specifically.
r² = 0.996
Smart rings demonstrated high accuracy: heart rate r² = 0.996, heart rate variability r² = 0.980, and sleep detection 93 to 96% sensitivity.
47.7% / 52.3%
Studies were equally distributed between sleep (47.7%) and non-sleep applications (52.3%).
2.75 days
Predictive capabilities included COVID-19 detection 2.75 days pre-symptom (82% sensitivity), inflammatory bowel disease flare prediction 7 weeks early (72% accuracy), and bipolar episode detection 3 to 7 days early (79% sensitivity).
65%
However, 65% of studies had moderate-to-high bias risk.
Source: Smart Ring in Clinical Medicine: A Systematic Review (PMC, NIH)
Battery and price context
Battery life
A CUDIS buying guide says most premium smart rings last between 5 to 10 days on a single charge, far outlasting the typical 1 to 2 days of a smartwatch. The TechRing is different by design: it runs up to 12 hours per charge because it is worn for a session or a night, then charges in 2 to 4 hours.
Price
The same CUDIS guide lists a fitness smart ring priced at $399. The TechRing costs $275, and FirmTech’s non-tech Performance Ring and MaxPR cost $60 each. All three FirmTech rings are HSA/FSA eligible.
What this means for shoppers
If you want data, the numbers suggest ring-based sensors can track the body well, with a caveat about study quality. If you only want firmer erections, you do not need sensors at all: the Performance Ring and MaxPR do the same mechanical job for $60. See the TechRing vs Performance Ring vs MaxPR comparison or the performance ring reviews overview.
Common questions
- Is there a wearable device for erectile dysfunction?
- Yes. Erection rings are wearable devices that support firmer erections while worn, without pills or a prescription. FirmTech’s TechRing goes further: built-in sensors measure firmness, duration and nighttime erections and send the data to an app on iPhone or Android. A ring supports erections but does not diagnose a cause, so talk to a doctor about erectile dysfunction itself. See this in the full FAQ
- How many FirmTech rings have been sold?
- FirmTech reports more than 40,000 rings sold and says more than 308,000 erections have been analyzed, a figure it describes as growing every night. It also lists more than 20 studies published or underway. These are FirmTech’s own figures from its reviews, science and clinical studies pages, not an outside audit. See this in the full FAQ
- Is the TechRing the same as a fitness smart ring?
- No. Finger-worn smart rings track general health such as heart rate and sleep, and a CUDIS guide lists one fitness model at $399. The TechRing is worn at the base of the penis, supports firmer erections while worn and measures erectile firmness, duration and nighttime erections. It is a sexual health wearable, not a finger ring. See this in the full FAQ
- How long does the TechRing battery last?
- Up to 12 hours on a full charge, and a full charge takes 2 to 4 hours with the included USB charger. For context, a CUDIS buying guide says most premium finger-worn smart rings last 5 to 10 days per charge, but those rings track the whole day rather than single sessions and nights. See this in the full FAQ
- Why track nighttime erections?
- FirmTech notes that healthy men have 3 to 5 erections a night during sleep. They happen without arousal, so they are a clean read of blood flow, and changes can show up there before anything is noticeable during sex. FirmTech links erectile function to cardiovascular health and cites research connecting overnight erections with heart disease. See this in the full FAQ