Alfawise
WIN660
$275.84
Released 2018
Best Robot Window Cleaners · head-to-head
WIN660 vs W66
A sourced, side-by-side comparison. WIN660 is cheaper at $275.84. Every spec and price links to its source.
HUTT
W66
—
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | WIN660 | W66 |
|---|---|---|
| US price | $275.84 | — |
| 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 |
Sources — WIN660: dresslily.com (verified 2026-08-01). W66: hutt.bg (verified 2026-08-01).
What's the difference between the WIN660 and W66?
Where the two actually differ on the specs we track (6 of 9). Matching specs are omitted.
- 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