4 Metre Solar Powered Firefly Festoon Lights ---10 industrial style festoon bulbs. ---5 warm white LEDs per bulb. ---Perfect for garden, event and wedding decor. ---4 metres (lit length). ---Rechargeable battery included. ---External solar panel - 2 metre cable between lights & solar panel. ---12 months warranty. Make your garden stand out from the crowd and keep it bang on trend with these stunning, vintage style, solar festoon string lights. The 10 Edison shaped bulbs each house 5 warm white LEDs, which run along a discreet silver wire; really adding to the overall style and quality of these lights. The external solar panel stores up its power from the sun during the day and the lights turn on automatically at dusk, meaning your lights are environmentally friendly and incur no running costs.