Infrared Light Therapy for Joint and Muscle Pain Portable Rechargeable Flashlight， Red Light Therapy Wand Device，Red Lights-4 Wavelengths，Near Infrared Light Therapy.

M y husband uses this on his hands when he has pain. He loves it!!

Excellent item. Once charged, lighting last very long.

Buena calidad, pero es muy pequeño

mine only has 630 and 850nm I was hoping to get 900nm but the spectrum we measured did not have it. So either the description is misleading or mine is broken. The graph shows wavelength in nm for the x axis and intensity on the y axis.

Not sure if my pain is going away in my joints, with many injuries from martial arts, but it definitely is warm and easy to recharge.

Love it! I use it for TMJ, hand and wrist pain, and tooth and gum health. It's very powerful--I shine it through my cheek and it goes through my teeth (I figure it's not so drying that way, as I can swish my saliva while using the light). Very happy with this product, especially for the price I paid.

it would be a better product if there were four Leds instead of two because two Leds don't produce enough heat to stop my pain

My 16-year-old dog loves this, and when he has a treatment, he moves much easier and does zoomies like a puppy.

Within a minute or two of holding this light it becomes impossible to hold-as it’s too hot. Super disappointed as the seller surely knows this is the case yet continues to wells these…

Great item arrived quicky

I am pretty happy with it, the only thing is that the case get pretty hot . Not sure if it helps but it's only been a couple days since I started using.

Not worth even trying

Works well