Complete Package (Pair of Slippers): Get 2 slippers for the price of one. The package includes 2 high-quality LED slippers, power cables, adapter and unser manual. This LED therapy utilizes the state-of-the-art technology used on Pro Athletes by today's leading Therapists and Trainers. The lightweight comfortable slippers are made with premium high quality soft materials. Each slipper is US mens size 11 (12.5 x 5.3 x 2.5 inch) which fits very comfortably on most people. The long power cord is very convenient to use the slippers anywhere at you home. The slippers are extremely helpful for pain relief. Smart and Powerful: Each slipper is embedded with 96 LEDs, (66 on the bottom and 30 on the top). Each LED has 1 Red and 2 Infrared chips; therefore, each slipper has 96 red (660nm) and 192 invisible Infrared (850 nm) lights. The device auto shuts down after 10 minutes. You can set the timer to 10, 20 or 30 minutes just by pressing the power button (Green=10min, Blue=20min, Red=30min). Modes of Action: Press power button 2 seconds to trun on the device. There are three light therapy modes to choose the type of light according to your need. The first mode (GREEN) is for low power, the second mode (BLUE) medium, and the third mode (RED) is high power LED light therapy. Active Pain Relief: An array of red infrared light emitted through our LED pad is a highly efficient and effective pain reliever for feet, toes, instep and heels. Safe and Premium Quality: Our Multifunctional Red-Light therapy device offers a safe, natural, and drug-free therapy; shows no negative side effects. It is built to last, made with premium quality materials.