Recommended Lighting DistanceWe recommend placing the light lamp therapy 5.5-20inches away from your face to get the best result. | 15/30/45/60 Minutes TimerPress the Timer Button to set the timer, you could set an automatic timer from 10-60min in 15-minute intervals. | Easy to adjust brightnessYou can adjust the brightness from 20% to 100% for maximum comfort with just a long press. |