Solar Powered Patio Lights & Auto On/Off: Solar powered globe string lights, no battery and no electricity cost, energy saving, and environmentally. Built-in Ni-MH 400mAh rechargeable battery, can absorb and convert sunshine to electric energy efficiently, works up to 8 hours once fully charged. Remains the power switch in "On" position so that the light auto on in night and auto off during the daytime. Convenient to use! Waterproof wire and LED bulbs, these solar string lights could work in very humidity environment, perfect for indoor & outdoor use! Ideal for christmas, holidays, wedding, party, house decoration, bedroom, living room, wall, garden, backyard, or balcony, etc.