... 2.brightness: 25%, 50%, 75%, 100% 3.Rechargeable polymer lithium battery,1600mAh New Fashion P 3.0 LED Desk Display Key Specifications ... . Operation: switch buttons, 4 adjustable brightness 25%, 50%, 75%, 100%.5 speed adjustment, that is, the text display speed can ... Package: 1 per box, with CD, communication lines5. Charging time: 3-4hours, Wide voltage input AC110-220V6. Working time : 16 hours ...