Westinghouse Cordless Christmas 4 Light Set That Charge in Sun or Shade Solar Lights-Christmas 4 Light Set No wiring, easy to install, powered by sunlight No wiring, easy to install, powered by sunlighton at dusk, off at dawn, run time 6 - 8 hours no more expensive or dangerous extension cords, no electrical costs New amorphous panels charge even on a cloudy day