The writer lives in a hard-water area and recommends the Kärcher Window Vac WV 2 to get rid of streak marks on the shower screen.
Kärcher - WV 1 Plus - 2-in-1 Window Vacuum Squeegee - For Showers, Mirrors, Glass, & Countertops - 10 in. Squeegee Blade : Everything Else
WVP 10 KARCHER PROFESSIONAL WINDOW VAC REVIEW 2018
Streak-Free Window Vacuum: EAVE vacuum window cleaning machine features a strong suction (1.2KPa) and soft rubber scraper, which can easily and efficiently clean up the dirty water without any water streaks or scratches left on the glass. 45 Mins Long Working Time: With a built-in 2200 mAh rechargeable battery, this window vacuum squeegee can work continuously for about 45 minutes on full charged, avoiding frequent charging during window cleaning, save the time of cleaning.
Rechargeable Window VAC, Power Window Vacuum Cleaner Set, Window Squeegee Electric Cleaning Tool for Windows, tiles, Mirrors, 200ml Water Tank
WV 6 Premium
CV 66/2 Kärcher
WV 6 Premium
Karcher WD 5 P Wet/Dry Vacuum Cleaner Yellow
Window Vacs
Outstanding Performance: The WV 1 Plus's rechargeable, lithium-ion battery provides cordless freedom and features a battery run time of 25 minutes
Kärcher - WV 1 Plus - 2-in-1 Window Vacuum Squeegee - For Showers, Mirrors, Glass, & Countertops - 10 in. Squeegee Blade
Outstanding Performance: The WV 1 Plus's rechargeable, lithium-ion battery provides cordless freedom and features a battery run time of 25 minutes
Kärcher - WV 1 Plus - 2-in-1 Window Vacuum Squeegee - For Showers, Mirrors, Glass, & Countertops - 10 in. Squeegee Blade