The First-ever Robotic Window Cleaner with Portable Station]WINBOT W2 OMNI introduced the cutting-edge window cleaning station - an all-in-one multi-purpose dock that serves as a control panel, changer, stabler and the portable storage room for your window cleaning task. The built-in high-capacity lithium battery provides continuous power for the WINBOT W2 OMNI, enabling window cleaning in areas without access to power outlets. One charge lasts for 110 minutes, equivalent to 55 square meters of coverage.