LED desk sign ,LED message board 1-Powerful display ability 2-Different grade brightness ... 50%, 75%, 100%)through the side of LED desk board button.7- 5 grade speed adjust.8- It’s easy ... of the 8 messages through the side of LED desk board button.9- Battery Type: Poly-Lion Battery with 2400mAh ... system.High Quality and competitive priceComposing parts 1, LED desk board 1PCS 2, USB cable 1pCS 3, CD- ROM ...