It’s not every day that a red light therapy device like this one shows up on my radar. I wouldn’t even call it a red light therapy device—this is more like a light therapy device, and it's pretty unique.
Rather than a typical panel, torch, or face mask, this wrist-worn device shines five different wavelengths of light directly into your bloodstream. You read that right—this is designed to irradiate your blood, not your skin or sore joints. I know that sounds a little out there, so stick around, because I will dig into whether this is a legitimate health tool or just a flashy gimmick.
First Impressions: The Wrist Device That Shines Light Into Your Veins
Let’s start with what this thing actually is. I first came across the EndoLight Band from Weber Medical at a health expo last year. I even chatted with one of the reps. That interview video is below.
This is one of Weber Medical’s first devices made for home use. While they’ve been around in the light therapy space for quite some time (especially in the clinical and hospital market), the EndoLight is different. It’s wearable, made of sturdy aluminum, and surprisingly compact given its job. It weighs around 850 grams, though honestly, it doesn’t feel that heavy when it’s strapped on.
You wear it on the underside of your wrist—kind of like an oversized watch. But this isn't about telling the time; it's about emitting therapeutic light into your blood vessels. And unlike those LED-only panels, this thing uses seven laser diodes and one LED—yes, actual lasers.
My Interview!
A Closer Look: Modes, Features, and Build Quality
The EndoLight Band comes with three built-in modes:
- Recharge
- Relax
- Recover
Each mode activates different combinations of wavelengths. From what I’ve seen, the Recover mode uses all five wavelengths at once. You can adjust the intensity from 25% up to 100%, and each session lasts 30 minutes.
Everything’s controlled with physical buttons on the top, and there’s a built-in display to help you select the mode and intensity level. The battery charges through a USB-C port, and there's even a proximity sensor so the device only works when it detects contact with your skin. Take it off, and it shuts down automatically, a clever feature.
The Science: What Wavelengths Does It Use?
Time to geek out a little. I pulled out my spectrometer to see what wavelengths this thing is putting out—and how strong they are.
Here's what I found:
- Red Laser – 665nm
Delivers around 45 mW/cm² at the source. That’s solid output. - Near-Infrared Laser – 808nm
Sharp, narrow peak—exactly what you expect from a laser. - Amber LED – 590nm
This is the only LED on the device. It has a wide peak and low radiance—about 2 mW/cm². - Green Laser – 500nm
Roughly 27 mW/cm². That’s a lot of green. - Blue Laser – 450nm
Around 17 mW/cm², though it's tricky to get super-precise readings that close to the diodes.
Everything matched up with what the company claimed, both in terms of wavelength and radiance, which is always a reassuring sign.
What’s the Price?
The EndoLight Band retails for €1,785, which is around $1,950 USD. Yes, that’s a serious investment. But with my discount code ALEX and the following link: https://aferg.co/weber, you can save 5%.
Inside the box, you’ll get:
- The device itself
- A hard-shell travel case
- Charging cables
- A cleaning cloth (though not sure why you'd really need this)
- A smaller wrist strap for those with tiny wrists
- And a 12-month warranty
The Concept: Blood Irradiation at Home
Here’s the heart of the matter—this device isn’t designed to treat muscle pain or target surface-level skin issues. The EndoLight shines light directly into the veins and arteries of your wrist to deliver systemic, full-body benefits through a process known as photovoltaic blood irradiation.
Yes, it’s a real thing—and no, it’s not new.
Weber Medical also makes IV-based blood irradiation devices, in which a light probe is inserted directly into the bloodstream. Of course, the EndoLight is noninvasive, meaning no needles or medical procedures—wrap it on your wrist and go.
The science? Well, while external photobiomodulation has mountains of research behind it, IV laser therapy is less studied, and what has been published is inconsistent—different wavelengths, different treatment times, different devices.
But overall, the findings are positive.
One study on post-bypass surgery patients found improved cardiac recovery when IV laser therapy was used. Other papers show benefits for sleep, artery health, brain injury recovery, and even fighting viral infections (hello, blue light!).
And keep in mind—any red light therapy device that shines into your skin is going to provide some blood irradiation. What makes the EndoLight different is that it’s built to do only that.
Pros: Why the EndoLight Stands Out
There’s a lot to like here:
- High-powered, laser-based photobiomodulation
Lasers deliver precise, narrowband light at the intended therapeutic wavelengths. - Five wavelengths in one compact device
Red, NIR, blue, green, and amber—each with its own potential benefits. - Customizable modes
Want to avoid blue light at night? Just select a mode without it. - Portable and silent
I wore this while working at my desk—it didn’t interfere at all. There are no fans, no noise, and the battery seems to last well. - Non-invasive blood therapy
You can wear this during a walk, commute, or even gym warm-up. It’s discreet enough to use without breaking routine.
Cons: A Few Things to Think About
That said, it's not all sunshine and laser beams.
- Limited wavelength control
You can’t manually select individual wavelengths—just the preset modes. - New product
No long-term durability reports yet. Battery longevity is a fair concern, especially with wearables. - Price tag
$1,950 is a lot, especially for a device with a small treatment area. - Looks a bit clunky
Some might feel awkward wearing this in public—it resembles a house arrest bracelet. - Not a substitute for a full panel
For that price, you could buy a powerful panel that treats larger areas and still irradiates the blood.
So, you have to ask yourself—is this the best way to achieve your light therapy goals?
Final Thoughts: Is It Worth It?
I’ve had a few light therapy devices over the years that looked promising and flopped. One wrist-based device cost me a couple of grand and died within a year. So naturally, I’m cautious.
However, Weber Medical is a trusted name in clinical light therapy, giving me more confidence.
If you’re deeply into photobiomodulation, travel frequently, or just want something portable and high-tech, this could be an awesome addition to your wellness toolbox.
But if you’re new to light therapy, I’d hold off. Start with a torch or panel—something more versatile and proven. And if clinical studies start emerging on the EndoLight? Well, that might change things.
For now, I’ll keep testing it. I’m curious to see how it performs during travel, or if I feel a cold coming on. That blue laser might come in handy.
Oh, and don’t forget—if you're curious about the why behind these wavelengths or want more updates from the medical team behind this device, subscribe to the Light Therapy Insiders newsletter. I’m working on setting up a deeper dive with the company to answer all your questions.
Items Mentioned In This Article:
✅ If you want a Weber Endolight, use discount code ALEX and the following link: https://aferg.co/weber
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Alex Fergus wrote this blog post. Alex is an ISSN Sports Nutrition Specialist, Fitness Professional, and certified Superhuman Coach who continues to expand his knowledge base and help people worldwide with their health and wellness. Alex is recognized as the National Record Holder in Powerlifting and Indoor Rowing and has earned the title of the Australian National Natural Bodybuilding Champion. Having worked as a health coach and personal trainer for over a decade, Alex now researches all things health and wellness and shares his findings on this blog.
