# WIN660 vs W66: specs and price compared

A sourced, side-by-side comparison of the WIN660 (Alfawise) and W66 (HUTT) among robot window cleaners.

## Side by side

| Spec | WIN660 | W66 |
| --- | --- | --- |
| US price | $275.84 | not published |
| Brand | Alfawise | HUTT |
| Released | 2018 | — |
| Suction power (Pa) | 2800 | 2600 |
| Cleaning speed mode | ~2.5 min/m^2 | ~2.5 min/m^2; intelligent suction algorithm adjusts to dirt level |
| Battery backup min | 25 | 30 |
| Spray system | — | 150ml intelligent water tank, wipes 70-90 sq m of glass per fill |
| Path planning | 4 edge-sensing sensors for frame/frameless windows; Z and N cleaning patterns | Laser module measures range for accurate window-frame edge detection |
| Noise level (dB) | 65 | 65 |
| Safety tether | 150kgf-rated safety rope | 5m safety cable (load rating not published) |
| Edge detection | 4 edge-sensing sensors, works on frameless windows | Laser-based frame/edge ranging, more precise than prior HUTT models per manufacturer |
| Weight (lb) | — | 3.46 |

## Key differences

- Suction power (Pa): WIN660 2800 vs W66 2600
- Cleaning speed mode: WIN660 ~2.5 min/m^2 vs W66 ~2.5 min/m^2; intelligent suction algorithm adjusts to dirt level
- Battery backup min: WIN660 25 vs W66 30
- Path planning: WIN660 4 edge-sensing sensors for frame/frameless windows; Z and N cleaning patterns vs W66 Laser module measures range for accurate window-frame edge detection
- Safety tether: WIN660 150kgf-rated safety rope vs W66 5m safety cable (load rating not published)
- Edge detection: WIN660 4 edge-sensing sensors, works on frameless windows vs W66 Laser-based frame/edge ranging, more precise than prior HUTT models per manufacturer

## Sources

- WIN660: https://www.dresslily.com/alfawise-win660-robotic-window-cleaner-product2492527.html (dresslily.com, verified 2026-08-01)
- W66: https://hutt.bg/en/hutt-w66-window-cleaner-robot (hutt.bg, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/robot-window-cleaners/alfawise-win660-vs-hutt-w66/
Cite: Per The Front Desk Review, WIN660 ($275.84) vs W66 (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/robot-window-cleaners/alfawise-win660-vs-hutt-w66/
License: CC BY 4.0.