This Online Christmas Tree Decoration Light String is safely operated with three AA batteries. An energy efficient and earth friendly model, this light string features 80 LED bright bulbs. The 10m length makes a beautiful addition to your Christmas decorations, whether its around the tree or up the stairs. The lights on this string light are designed to stay cool even after hours of use, safe touching or replacing bulbs. You can easily adjust the light and its brightness using its adjustable dimmer knob. Each LED lights up bright and twinkles with festive style and merriment. The controlled device allows you to customize your Christmas setup by controlling the lighting effect and brightness in one touch. You can turn on or off the tree light string with just one click, making it easy for children to access. This tree string light is all weather proof and can be safely used outdoors or indoors depending on your preference. Its powerful light output with three AA batteries ensures a continuous festive display. Take the hassle out of decorating and holiday lighting this season with the help of this string light. It is the perfect addition to any Christmas celebration setting and is sure to bring great joy to all your guests.