Device in the image is a cordless electric window vacuum cleaner.
This set, typically priced around USh 200,000 in Kampala, includes the vacuum unit, a spray bottle with a microfiber cloth attachment, and a charger. It is designed to spray, wipe, and vacuum water and dirt from windows and mirrors without leaving streaks. [1, 2]
To use it:
Spray the glass with a mixture of water and cleaning solution.
Scrub away grime using the included microfiber cloth pad.
Turn on the vacuum to suck up the dirty water, leaving a streak-free shine. [1, 2, 3, 4]
Are you looking for local stores in Kampala or online options to purchase this item, or would you like tips on how to get streak-free windows?