We noticed a lot of folks dealing with joint stiffness and skin issues were stuck using bulky devices that don't really conform to body, so we went with a flexible wrap design that basically lets you strap it on an elbow or knee and move around.
It handles that problem well by combining 60 5050SMD 3-chip LEDs, which give you both 660nm red for suface-level skin stuff and 850nm near-infrared for deeper tissue penetration—you can run them together in combo mode or switch between continuous, 10Hz, 40Hz, or even a breathing pulse pattern.
The wrap is 32.5 x 17.5 cm, runs on a 1200mAh battery at 10W, and the timer goes form 10 to 90 minutes with a default of 30; it's also EMF-free at 0μT, which is nice if you're sensitive to that.
Power consumption is pretty low, so you'll get about 20 days or so on a full charge depending on use, but we usually have stock ready to ship and lead time is roughly 2-4 weeks (check for current availability if you need a big batch though).
One thing we don't recommend it for is spot treating tiny areas like a fingertip—the 32.5cm length works best on larger joints or muscle groups.
Anyway, it's CE and RoHS compliant, comes with a 1-year warranty, and teh key controller is straightforward enough that most buyers just set it and forget it.