... led panel screen,mini led laptop panel,mini green wireless indoor led panel screen,transparent led screen,led display screen Features:1.It can ... 4. Four level brightness adjustable: 25%, 50%, 75% and 100%,easily adjust according to the outside lightenvironment by one button ... 5.Battery: Built-in rechargeable lithium polymer battery, 2060mAh,with fully charged can support as long as12hours 6.Text input ...