It sounds like another money-making device to me!
"is suggested, but there is insufficient evidence to indicate a use superior to traditional practices."

Low-level laser therapy (LLLT) is a medical and veterinary treatment that uses low-level lasers or light-emitting diodes to alter cellular function. LLLT is controversial in mainstream medicine with ongoing research to determine the ideal location of treatment (specifically whether LLLT is more appropriately used over nerves versus joints[1]), dose, wavelength, timing, pulsing and duration.[2] The effects of LLLT appear to be limited to a specified set of wavelengths of laser,[3] and administering LLLT below the dose range does not appear to be effective.[4]

Despite a lack of consensus over its ideal use, specific test and protocols for LLLT suggest it is effective in relieving short-term pain for rheumatoid arthritis,[1] osteoarthritis,[5] acute and chronic neck pain,[6] tendinopathy,[7][3] and possibly chronic joint disorders.[4] The evidence for LLLT being useful in the treatment of low back pain,[8][9] dentistry[10][11] and wound healing is equivocal.[12]

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