[【16 POWERFUL BLUE LED BULBS】455nm wavelengths 【16 POWERFUL RED LED BULBS】635nm wavelengths 【1 YEAR REPLACEMENT WINDOW】 No hassle just let us know if there are ANY problems with your light. 【SCIENCE:】 Research into red & blue light at specific wavelengths—635nm & 455nm—has explored potential benefits including applications for gingivitis swollen gums reducing bleeding gums receding gums immediate relief for tooth pain gum sensitivity & reducing causes of bad breath. These findings are supported by scientific studies however we do not claim that our specific product will produce the same results as those observed in these studies. While our device uses similar wavelengths as those studied individual results may vary and this product is not intended to diagnose treat cure or prevent any disease. 【iPHONE ANDROID USB USB-C CONNECTORS】 Small lightweight at home Gum Support connects to most cell or usb devices and the LED mouth guard is easy to use for most people for multiple sessions per day 20 minutes per use. 【NO BATTERIES or Recharging】 Oral Hygiene Light never needs to be charged. Plug-in to your device for possible gum stimulation and gum health. 【CONVENIENT PORTABLE SAFE EASY】 Use our power combo red blue light oral therapy anywhere. Universal size mouth tray is comfortable silicone. Daily usage is best.]