... ,Solar cell of single crystal silicon 2,Working about120 hours 3,Easy installation, no maintenance,environmentally friendly Detailed Product Description Solar ... be set according to actual needs),becoming brighter/dimmer slowly.3.Ultra high lightness LED with 6 tubes.4.continuously work ... more than 120 hours after being fully charged.5.light colors:red ,yellow ,blue, green and white.6.diameter:5cm ...