For most of medical history, measuring erectile health objectively meant an overnight stay in a sleep lab hooked up to a nocturnal penile tumescence (NPT) monitor. Today, that same category of data can be captured at home, worn as comfortably as a normal ring. That's the idea behind the FirmTech TechRing.

If you've never used a wearable device for sexual health before, here's what it actually does, why doctors are recommending it, and how it fits alongside a nitric oxide–boosting supplement like AFFIRM.

What the TechRing Actually Measures

The TechRing is a wearable erection ring with built-in sensors that tracks the firmness and duration of erections, whether during sex or overnight while you sleep. The data syncs via Bluetooth to a companion app, which uses an AI interface to turn raw sensor readings into a clear picture of your erectile activity over time.

Two features make this clinically meaningful rather than just a novelty gadget:

• Nighttime tracking. Nocturnal erections happen involuntarily during REM sleep and are considered one of the most reliable indicators doctors use to separate physical from psychological causes of erectile difficulty. Tracking this at home, over multiple nights, gives a far more complete picture than a single clinic visit ever could.
• Objective, not self-reported. Most men's health data, including in clinical research, relies on questionnaires and subjective recall. The TechRing instead measures firmness and duration directly through its sensors, removing guesswork from the equation.

Why This Matters: The Data Behind It

The TechRing isn't just a consumer gadget, it's the same device used in peer-reviewed clinical research. A 2025 study published in The Journal of Sexual Medicine used the TechRing to measure nighttime erectile activity in men taking Sildenafil, with and without a nitric oxide–boosting supplement, and found a statistically significant 34% increase in erectile activity when the two were combined. That kind of finding is only possible because the device produces objective, quantifiable data rather than a subjective rating scale.

Urologists involved with FirmTech's clinical work have described the TechRing as a genuine breakthrough for real-time, at-home monitoring of erectile and broader vascular health, allowing men and their doctors to see, in concrete numbers, how a treatment or lifestyle change is actually performing rather than relying on impressions alone.

How the Ring Is Designed to Be Worn

The TechRing uses a penoscrotal, hook-and-loop design that's adjustable to fit most men comfortably (up to 5.5 inches erect girth). It's rechargeable via USB with an 8 to 12 hour runtime, splashproof, and made from a medical-grade elastomer that's phthalate and latex-free. It can be worn during sex, where the light compression helps maintain firmness and can intensify orgasm intensity, or overnight purely for tracking purposes.

Pairing Tracking With Nitric Oxide Support

A tracker tells you where you stand. A nitric oxide–boosting supplement like AFFIRM, formulated with L-Citrulline, Red Beet Root Extract, Panax Ginseng, and Muira Puama, is designed to support the blood flow those numbers are measuring in the first place. Used together, you get both the intervention and a way to objectively see whether it's working. You can review the full clinical rationale behind the formula on the AFFIRM Scientific Abstract page.

For men who want both in one step, the AFFIRM + TechRing Bundle pairs the exact supplement and tracking approach used in ongoing clinical research.

Who Developed This?

AFFIRM Science partners with FirmTech to offer the TechRing directly, under the guidance of Dr. Judson Brandeis, a board-certified urologist and clinical researcher who has used the device in his own published studies. You can browse more of his clinical work and formulation philosophy on the Physician Information page.

Get Started

Shop the TechRing, and save 10% automatically when you click here to shop AFFIRM to start supporting the blood flow the ring measures.

Frequently Asked Questions

Is the TechRing comfortable to wear overnight?
Yes, it's designed to be worn for extended periods, including overnight, with an adjustable, hook-and-loop fit and a medical-grade elastomer material.

Do I need a prescription to use the TechRing?
No. It's available for direct purchase and does not require a prescription.

Can the TechRing be used alongside ED medication or supplements?
Yes. It's designed purely to measure and track, not to treat, so it can be worn alongside any medication or supplement your doctor has approved, including AFFIRM.

How is this different from a clinical NPT (nocturnal penile tumescence) test?
Traditional NPT testing typically requires an overnight sleep lab visit. The TechRing brings that same category of monitoring home, letting you track data across multiple nights in your own environment.