Beldray Window Vacuum BEL0749TTRevolutionise your window care routine with this innovative Beldray rechargeable window vacuum, which provides a wonderfully streak free finish and offers up to 30 minutes of continuous use on a single charge. With a large 60 ml refillable water tank and ergonomic handle, simply wash the window surface with detergent and water then use the 10 W vacuum to collect dirt and grime, leaving nothing but sparkling clean glass every time.