Our take
HOBOT 388
A simple but effective window-cleaning robot for awkward exterior glass. Owner feedback is positive on speed and ease of use, especially for apartments where manual outside cleaning is risky.
Owners praise the automatic spray, fast cleaning and the fact it can handle exterior windows without leaning outside.
It still needs cloth changes and manual repositioning between panes, so it saves effort rather than making window cleaning fully automatic.
Glass-cleaning jobs that benefit from dual rotating cleaning wheels.
Buyers who need a robot that is available to buy immediately.
- Dual rotating cleaning wheels
- Ultrasonic water spray
What owners and reviewers say
Older owner reports are positive about the 388’s automatic spraying and help with outside apartment windows, while acknowledging missed corners and occasional streaks.
The practical benefit
Several contributors to the checked Russian owner page valued cleaning outside glass in high-rise apartments. One had used the robot for two months and particularly appreciated automatic wetting. Another also used it on mirrors and a glass kitchen splashback. These accounts describe useful access and convenience in specific homes.
[1]Corners and the finish
Two owners explicitly accepted that the round-pad design leaves corner areas unfinished. One also reported occasional streaks, whereas others were satisfied with the clarity. That variation should remain visible: the evidence supports reduced effort, not a promise of consistently flawless glass.
[1]Controls and ongoing ownership
An owner preferred the remote to the available app and liked having several sets of cloths. The reports therefore suggest that simple controls and keeping clean pads ready matter in practice. They do not provide a current repair-cost record or demonstrate that today’s stock and software behave identically to the units reviewed.
[1]The detailed submissions date from 2020–2021 and are not independently verified purchases.
Sources (1)
- RobotObzor HOBOT 388 owner submissions ↗Owner report
Full specifications
- Safety system
- 4.5 meter long safety rope can take up to 200KG tension
- Power-off protection
- Embedded UPS keeps HOBOT staying in position with alerting sound for 20 minutes
- Spray system
- Ultrasonic Water Spray that atomizes water into 15 micrometer dense mist; Replaceable Water Tank
- Navigation
- AI Smart Route Plan for Through Cleaning; Auto-detects edges of window
- Suction/adhesion
- High volume centrifugal pump which supplies negative pressure consistently
- Run time
- Mains powered: 4 meters power cord
Sources
Videos
- Robot My Life: HOBOT 388 review ↗
- Home Robot USA: How to Use HOBOT-388 Window Cleaning Robot with Ultrasonic Water Spray - Video Manual (ver.2) ↗
- Search YouTube for HOBOT 388 ↗Search results may include similar models; check the model name.



