Functional Analysis
Red Light with wavelengths from 600nm (the red end of the spectrum) to 1200nm (the near-infrared end of the spectrum) is the optimal range for penetrating tissue. This wavelength range is often referred to as the "therapeutic window" for laser applications, as shown in the figure

Portable 660nm+850nm infrared red light double phototherapy - red light can reach the deep layers of the skin, stimulate cell repair, promote blood circulation, and make the complexion more vibrant and youthful. Infrared is invisible to the naked eye and has strong penetrating power. It produces a thermal effect, increases tissue temperature, promotes blood circulation, enhances metabolism, and improves cell viability and regeneration. 30 minutes automatic timer

Product description:
1. 30-minute timer function
2.40pcs 660nm red light & 20pcs 850nm near infrared
3.5 gear power adjustment
4. Select the temperature as required.
5 Advanced environmental protection materials, no odor, soft and skin-friendly, the stains on the surface of the product can be scrubbed with water after use.
6. It is suitable for pain relief, hot compress therapy and massage for neck, arm, knee, leg, abdomen, shoulder and other parts.

Package Included
1* red light therapy
1* power adapter
1* type-C USB cable(56in length)
1* manual
1* black box.

SAFE & NATURAL RELIEF:
DC 5V 2A red light therapy device for jaw and neck pain relief, face shaping. The ear-hook design will not press your ears and will not affect your hearing during use.for jaw is designed for jaw, chin, neck, leg, arm

skin-friendly material
Soft skin-friendly material, detachable and washable belt.with magic patch.The surface is covered with a transparent plastic film, which is waterproof and easy to clean.